San Marcos City Council
February 25, 2025

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 53 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13353 A4 ZPIP17613 2 0 1 CIRCULAR 0.020 RCP 5.0 5.1 None 0.16 8.1 8.1 None 12.0 11.8 None 13.6 13.2 None PIPE13617 A4 ZPIP13844 2 0 1 CIRCULAR 0.039 RCP 7.7 7.7 None 0.17 12.4 12.0 None 18.5 18.3 None 21.1 18.9 None DTCH10282 A4 1.5 3 1 PARABOLIC 0.023 Concrete 4.5 4.5 None 0.16 7.2 7.2 None 10.6 10.5 None 13.9 11.9 None PIPE12388 A4 ZPIP16718 3 0 1 CIRCULAR 0.057 RCP 16.8 17.0 None 0.11 35.4 35.7 None 56.1 56.5 None 65.0 65.4 None PIPE12463 A4 ZPIP12870 2 0 1 CIRCULAR 0.018 RCP 4.8 4.9 None 0.16 7.6 7.6 None 11.0 11.0 None 12.4 12.4 None PIPE12493 A4 ZPIP10312 2 0 1 CIRCULAR 0.041 RCP 7.1 7.1 None 0.15 11.3 11.3 None 16.6 16.6 None 18.7 18.7 None PIPE12540 A4 ZPIP13010 6 0 1 CIRCULAR 0.068 RCP 109.6 109.6 None 0.1 207.0 207.2 None 319.5 331.5 None 366.9 454.5 None PIPE12635 A4 ZPIP13132 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 5.7 None 0.0 6.0 Downstream PIPE12727 A4 ZPIP13300 2 0 1 CIRCULAR 0.033 RCP 4.0 4.0 None 0.1 9.0 9.0 None 14.3 14.3 None 16.6 16.6 None PIPE12904 A4 ZPIP13850 1.5 0 1 CIRCULAR 0.011 RCP 1.6 1.6 None 0.15 2.7 2.7 None 4.0 4.0 None 4.6 4.6 None PIPE13053 A4 ZPIP17366 6 0 1 CIRCULAR 0.140 RCP 174.6 173.8 None 0.11 327.6 324.0 None 503.7 530.9 None 577.5 646.4 Downstream PIPE13067 A4 ZPIP17368 2.5 0 1 CIRCULAR 0.177 RCP 29.4 29.5 None 0.17 47.3 47.4 None 70.2 66.1 None 79.6 71.6 None PIPE12422 A4 ZPIP12579 1.5 0 1 CIRCULAR 0.069 RCP 0.0 0.0 None 0 0.1 0.0 None 0.1 8.1 Both Upstream and Downstream 0.1 11.1 Both Upstream and Downstream PIPE12438 A4 ZPIP10160 1.5 0 1 CIRCULAR 0.077 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 11.8 None PIPE12461 A4 ZPIP12868 2 0 1 CIRCULAR 0.019 RCP 4.7 4.7 None 0.15 7.6 7.6 None 11.1 11.1 None 12.5 12.5 None PIPE12734 A4 ZPIP16908 3.5 0 1 CIRCULAR 0.076 RCP 27.7 27.7 None 0.1 60.0 60.0 None 95.1 95.0 None 110.2 110.5 None PIPE12736 A4 ZPIP10528 3 0 1 CIRCULAR 0.053 RCP 15.9 16.0 None 0.1 33.6 33.6 None 53.0 52.4 None 61.3 60.9 None PIPE13252 A4 ZPIP15659 2 0 1 CIRCULAR 0.056 RCP 7.8 7.8 None 0.15 12.7 12.8 None 18.9 18.9 None 21.4 21.4 None PIPE13264 A4 ZPIP15668 4 0 1 CIRCULAR 0.070 RCP 41.6 41.6 None 0.11 85.1 85.1 None 130.2 130.2 None 151.8 151.8 None PIPE13328 A4 ZPIP15888 3 0 1 CIRCULAR 0.028 RCP 14.6 12.2 None 0.11 28.4 30.9 None 45.4 45.0 None 54.2 44.3 None PIPE12325 A4 ZPIP12349 2.5 0 1 CIRCULAR 0.010 RCP 3.5 3.5 None 0.08 6.3 6.1 None 9.7 9.7 None 11.1 16.0 None PIPE12338 A4 ZPIP12448 3 0 1 CIRCULAR 0.084 RCP 23.2 23.3 None 0.12 43.9 43.9 None 67.7 66.0 None 77.8 75.6 None PIPE12421 A4 ZPIP12578 1.5 0 1 CIRCULAR 0.045 RCP 0.0 0.0 None 0 0.0 8.6 None 0.0 8.8 Both Upstream and Downstream 0.0 8.6 Both Upstream and Downstream PIPE12425 A4 ZPIP10150 1.5 0 1 CIRCULAR 0.065 RCP 3.7 3.7 None 0.14 6.2 6.2 None 9.2 9.2 None 10.5 10.5 None PIPE12541 A4 ZPIP16837 1.5 0 1 CIRCULAR 0.048 RCP 3.5 3.5 None 0.15 5.5 5.5 None 8.0 8.0 None 8.9 9.0 None PIPE12590 A4 ZPIP13102 3 0 1 CIRCULAR 0.222 RCP 39.6 40.1 None 0.13 69.9 70.5 None 105.8 105.8 None 121.4 121.5 None PIPE12720 A4 ZPIP10521 3.5 0 1 CIRCULAR 0.077 RCP 27.6 27.7 None 0.1 59.9 59.9 None 95.2 94.8 None 110.2 110.4 None PIPE12799 A4 ZPIP16663 2 0 1 CIRCULAR 0.027 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 13.0 None 0.0 14.3 None PIPE13131 A4 ZPIP17412 1.5 0 1 CIRCULAR 0.006 RCP 1.2 1.2 None 0.15 1.9 1.9 None 2.8 2.8 None 3.1 3.1 None PIPE13165 A4 ZPIP15457 3 0 1 CIRCULAR 0.005 RCP 6.0 6.0 None 0.13 9.9 9.9 None 14.8 16.4 None 16.8 17.7 None PIPE13260 A4 ZPIP15664 4 0 1 CIRCULAR 0.012 RCP 14.5 14.5 None 0.09 32.8 32.8 None 52.8 52.8 None 61.2 61.2 None PIPE13300 A4 ZPIP15743 2 0 1 CIRCULAR 0.079 HDPE 5.4 5.5 None 0.09 8.7 8.7 None 12.7 12.7 None 14.3 25.0 None PIPE13401 A4 ZPIP16073 3 0 1 CIRCULAR 0.026 RCP 11.0 11.1 None 0.1 22.5 22.6 None 35.6 36.2 None 41.1 41.3 None PIPE12580 A4 ZPIP13094 3 0 1 CIRCULAR 0.230 RCP 39.6 40.1 None 0.13 70.0 70.5 None 105.9 105.9 None 121.5 121.6 None PIPE12582 A4 ZPIP16866 2.5 0 1 CIRCULAR 0.030 RCP 10.0 10.0 None 0.14 16.3 16.3 None 22.9 24.2 None 25.3 27.4 None PIPE12599 A4 ZPIP16653 2 0 1 CIRCULAR 0.041 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 16.6 None 0.0 17.2 Both Upstream and Downstream PIPE12688 A4 ZPIP13246 3 0 1 CIRCULAR 0.044 RCP 8.3 8.3 None 0.06 19.6 19.7 None 31.8 31.9 None 37.0 53.2 None PIPE12896 A4 ZPIP10808 2 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 11.7 None 0.0 11.0 Downstream PIPE12906 A4 ZPIP13852 1.5 0 1 CIRCULAR 0.026 RCP 2.5 2.5 None 0.14 4.1 4.1 None 6.0 5.4 Downstream 6.8 6.6 Both Upstream and Downstream PIPE13006 A4 ZPIP17244 1.5 0 1 CIRCULAR 0.075 RCP 3.3 3.3 None 0.11 5.8 5.8 None 9.4 9.3 None 11.0 10.9 None CULV10193 A4 ZCUL11251 6 12 1 RECT_CLOSED 0.015 RCP 272.1 276.7 None 0.17 442.6 436.9 None 658.7 570.7 None 654.5 616.4 None CULV10208 A4 ZCUL14927 6 12 1 RECT_CLOSED 0.015 RCP 274.3 284.5 None 0.18 446.2 441.4 None 655.5 566.5 None 660.7 608.1 None PIPE13313 A4 ZPIP15753 3 0 1 CIRCULAR 0.014 HDPE 8.1 8.1 None 0.1 16.6 16.6 None 25.4 25.4 None 29.6 29.6 None PIPE13492 A4 PIP10198 5 0 1 CIRCULAR 0.044 RCP 60.1 60.2 None 0.11 115.9 115.9 None 178.1 178.3 None 206.1 206.5 None PIPE12459 A4 ZPIP10299 2 0 1 CIRCULAR 0.195 RCP 14.0 14.0 None 0.14 22.2 22.2 None 32.4 32.3 None 36.5 36.6 Downstream PIPE12472 A4 ZPIP10305 2 0 1 CIRCULAR 0.015 RCP 3.7 3.7 None 0.14 6.0 6.0 None 8.8 8.9 None 10.0 10.0 None PIPE12700 A4 ZPIP10501 4 0 1 CIRCULAR 0.043 RCP 28.6 28.8 None 0.1 60.0 60.2 None 94.7 95.4 None 109.0 110.3 None PIPE12713 A4 ZPIP10514 1.5 0 1 CIRCULAR 0.006 RCP 1.2 1.2 None 0.15 1.9 1.9 None 2.8 2.8 None 3.1 3.1 None CULV10198 A4 ZCUL14924 4 6 1 RECT_CLOSED 0.028 RCP 52.2 47.2 None 0.09 83.0 76.2 None 135.9 170.5 None 151.1 191.3 None PIPE13293 A4 ZPIP11796 3 0 1 CIRCULAR 0.025 HDPE 14.4 14.7 None 0.14 23.3 23.6 None 34.5 34.9 None 39.1 39.3 None PIPE13365 A4 ZPIP11921 1.5 0 1 CIRCULAR 0.047 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.6 None 0.0 8.5 None PIPE13413 A4 ZPIP17652 1.5 0 1 CIRCULAR 0.020 PVC 2.1 2.1 None 0.14 3.3 3.3 None 4.8 4.8 None 5.5 5.5 None PIPE13509 A4 PIP10429 5 0 1 CIRCULAR 0.037 RCP 53.0 53.0 None 0.11 104.4 104.4 None 162.5 162.6 None 187.9 188.1 None PIPE13510 A4 PIP10430 5 0 1 CIRCULAR 0.037 RCP 52.9 52.9 None 0.11 104.3 104.3 None 162.4 162.5 None 187.8 188.0 None PIPE13609 A4 ZPIP11765 3.5 0 1 CIRCULAR 0.068 RCP 24.4 24.4 None 0.09 53.2 53.2 None 83.6 83.7 None 96.5 96.7 None PIPE12334 A4 ZPIP12382 1.5 0 1 CIRCULAR 0.107 RCP 4.0 4.0 None 0.12 7.2 7.2 None 11.0 11.0 None 12.6 12.6 None PIPE12336 A4 ZPIP10082 2.5 0 1 CIRCULAR 0.071 RCP 12.4 12.4 None 0.11 23.6 23.5 None 36.5 34.6 None 41.9 39.4 None PIPE12661 A4 ZPIP16893 4 0 1 CIRCULAR 0.035 RCP 23.6 23.7 None 0.09 51.7 51.9 None 82.5 82.7 None 95.0 95.8 None PIPE12676 A4 ZPIP13238 2 0 1 CIRCULAR 0.033 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 14.8 None PIPE12679 A4 ZPIP10494 2 0 1 CIRCULAR 0.542 RCP 16.3 16.3 None 0.1 27.8 27.9 None 42.5 45.4 None 48.7 60.3 None PIPE12768 A4 ZPIP10556 2 0 1 CIRCULAR 0.007 RCP 2.7 2.6 None 0.14 4.2 4.2 None 6.1 6.1 None 6.9 6.9 None PIPE12772 A4 ZPIP16928 3 0 1 CIRCULAR 0.042 RCP 16.3 16.3 None 0.12 27.7 27.8 None 42.4 42.3 None 48.6 48.6 None PIPE12783 A4 ZPIP13407 1.5 0 1 CIRCULAR 0.009 RCP 1.3 1.3 None 0.13 104.6 2.0 None 26.9 3.2 None 23.8 3.6 None PIPE13130 A4 ZPIP11578 4 0 1 CIRCULAR 0.012 RCP 21.6 21.9 None 0.14 34.4 34.4 None 50.3 50.5 None 56.8 57.0 None PIPE13139 A4 ZPIP15309 2.5 0 1 CIRCULAR 0.008 RCP 4.9 4.9 None 0.14 7.7 7.7 None 11.3 11.3 None 12.7 12.7 None PIPE13140 A4 ZPIP15310 2.5 0 1 CIRCULAR 0.005 RCP 3.8 3.8 None 0.14 6.0 6.1 None 8.9 8.9 None 10.0 10.0 None PIPE13176 A4 ZPIP17476 1.5 0 1 CIRCULAR 0.063 RCP 3.6 3.6 None 0.14 5.7 5.7 None 8.4 8.4 None 9.5 9.5 None PIPE13271 A4 ZPIP15674 1.5 0 1 CIRCULAR 0.078 RCP 4.0 4.0 None 0.14 6.4 6.4 None 9.3 9.3 None 10.5 10.5 None PIPE13309 A4 ZPIP15748 1.5 0 1 CIRCULAR 0.068 HDPE 3.8 3.8 None 0.14 6.0 6.0 None 8.8 8.8 None 9.9 9.9 None PIPE12594 A4 ZPIP13104 2 0 1 CIRCULAR 0.390 RCP 16.3 16.3 None 0.12 27.8 27.9 None 42.5 42.4 None 48.7 49.0 None PIPE12658 A4 ZPIP13217 4 0 1 CIRCULAR 0.044 RCP 27.5 27.7 None 0.09 58.2 58.4 None 92.0 92.4 None 105.7 106.9 None PIPE12659 A4 ZPIP16891 4 0 1 CIRCULAR 0.045 RCP 27.5 27.8 None 0.09 58.2 58.6 None 92.0 92.8 None 105.6 107.3 None PIPE12698 A4 ZPIP16898 4 0 1 CIRCULAR 0.035 RCP 23.5 23.7 None 0.09 51.7 51.9 None 82.4 82.7 None 94.9 95.8 None PIPE12732 A4 ZPIP16906 3 0 1 CIRCULAR 0.041 RCP 10.8 10.8 None 0.08 25.2 25.2 None 40.8 40.8 None 47.4 47.4 None PIPE12881 A4 ZPIP10798 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 7.8 None 0.0 7.8 None PIPE13175 A4 ZPIP15494 2 0 1 CIRCULAR 0.014 RCP 3.5 3.6 None 0.13 5.7 5.7 None 8.4 8.4 None 9.5 9.5 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 54 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13255 A4 ZPIP11761 4.5 0 1 CIRCULAR 0.146 RCP 68.5 68.4 None 0.09 145.0 145.3 None 227.2 227.9 None 262.1 263.3 None PIPE13295 A4 ZPIP15729 2 0 1 CIRCULAR 0.010 HDPE 2.9 2.9 None 0.13 4.7 4.7 None 6.8 6.9 None 7.7 7.8 None PIPE13301 A4 ZPIP17542 2 0 1 CIRCULAR 0.015 HDPE 3.7 3.7 None 0.13 5.9 5.9 None 8.6 8.6 None 9.7 9.7 None PIPE13491 A4 PIP10132 5 0 1 CIRCULAR 0.052 RCP 61.8 61.9 None 0.1 118.8 118.8 None 182.1 182.4 None 210.8 211.2 None PIPE13603 A4 ZPIP11764 3.5 0 1 CIRCULAR 0.157 RCP 37.5 37.6 None 0.09 78.4 78.4 None 121.0 121.0 None 141.2 141.1 None PIPE12391 A4 ZPIP10131 1.5 0 1 CIRCULAR 0.376 RCP 8.0 8.0 None 0.12 13.1 13.0 None 19.5 19.3 None 22.1 22.1 None PIPE12468 A4 ZPIP16782 2 0 1 CIRCULAR 0.025 RCP 4.5 4.5 None 0.13 7.3 7.3 None 10.7 10.8 None 12.1 12.2 None PIPE12525 A4 ZPIP10359 2.5 0 1 CIRCULAR 0.031 RCP 8.7 8.7 None 0.12 14.2 14.3 None 21.1 21.2 None 23.9 24.0 None PIPE12763 A4 ZPIP10554 1.5 0 1 CIRCULAR 0.625 ACP 0.0 0.0 None 0 0.0 0.0 None 0.0 28.3 None 0.0 28.6 Both Upstream and Downstream PIPE12846 A4 ZPIP10697 2 0 1 CIRCULAR 0.087 RCP 8.5 8.5 None 0.13 13.7 13.7 None 20.3 20.0 None 23.0 23.0 None PIPE13133 A4 ZPIP17414 1.5 0 1 CIRCULAR 0.007 RCP 1.2 1.2 None 0.13 1.9 1.9 None 2.7 2.7 None 3.1 3.1 None PIPE13141 A4 ZPIP17416 2.5 0 1 CIRCULAR 0.005 RCP 3.8 3.9 None 0.13 6.1 6.1 None 8.9 8.9 None 10.0 10.0 None PIPE12331 A4 ZPIP10047 5 0 1 CIRCULAR 0.283 RCP 204.7 204.0 None 0.15 402.2 328.1 None 633.4 426.7 None 730.9 455.7 None PIPE12484 A4 ZPIP16789 1.5 0 1 CIRCULAR 0.039 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.7 None 0.0 6.8 None PIPE12549 A4 ZPIP16842 2 0 1 CIRCULAR 0.022 RCP 4.3 4.3 None 0.13 6.8 6.8 None 10.0 9.9 None 11.2 11.2 None PIPE13021 A4 ZPIP14949 3.5 0 1 CIRCULAR 0.015 RCP 11.9 12.8 None 0.11 19.0 20.6 None 47.9 31.1 None 50.3 40.2 None PIPE13262 A4 ZPIP15666 4 0 1 CIRCULAR 0.016 RCP 14.5 14.5 None 0.08 32.9 32.9 None 53.0 52.9 None 61.5 61.4 None PIPE13511 A4 PIP10472 5 0 1 CIRCULAR 0.049 RCP 52.8 52.9 None 0.09 104.2 104.1 None 162.2 162.2 None 187.7 187.7 None PIPE12329 A4 ZPIP12356 4 0 1 CIRCULAR 0.357 RCP 101.7 101.7 None 0.12 171.2 172.2 None 254.6 249.3 None 288.1 277.6 None PIPE12500 A4 ZPIP16793 2 0 1 CIRCULAR 0.029 RCP 4.6 4.7 None 0.12 7.4 7.5 None 11.0 11.1 None 12.4 12.5 None PIPE12502 A4 ZPIP10319 3.5 0 1 CIRCULAR 0.053 RCP 27.5 27.8 None 0.12 44.5 44.5 None 65.9 65.0 None 74.7 74.6 None PIPE12640 A4 ZPIP13152 2.5 0 1 CIRCULAR 0.026 RCP 5.6 5.6 None 0.09 11.4 11.4 None 18.4 18.4 None 21.3 21.3 None PIPE12684 A4 ZPIP10495 3 0 1 CIRCULAR 0.029 RCP 8.3 8.3 None 0.07 19.6 19.5 None 31.6 31.6 None 36.8 36.8 None PIPE12785 A4 ZPIP13410 1.5 0 1 CIRCULAR 0.010 RCP 1.3 1.3 None 0.12 60.9 2.1 None 9.6 3.0 None 6.6 3.4 None PIPE12798 A4 ZPIP13490 1.5 0 1 CIRCULAR 0.077 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 5.9 None 0.0 9.2 None PIPE12870 A4 ZPIP16668 2 0 1 CIRCULAR 0.085 RCP 7.4 7.4 None 0.11 12.3 12.3 None 18.3 18.4 None 20.8 20.8 None PIPE13066 A4 ZPIP15164 1.5 0 1 CIRCULAR 0.188 RCP 5.2 5.2 None 0.11 8.2 8.2 None 12.1 12.6 None 13.7 14.7 None CULV10224 A4 ZCUL045B 4 0 1 CIRCULAR 0.028 RCP 21.2 21.3 None 0.09 49.8 41.8 None 70.2 67.4 None 76.6 76.9 None PIPE13417 A4 ZPIP16140 2.5 0 1 CIRCULAR 0.072 PVC 13.3 13.4 None 0.12 21.3 21.4 None 31.5 31.4 None 35.5 35.6 None PIPE13447 A4 ZPIP12244 3.5 0 1 CIRCULAR 0.110 RCP 29.0 29.0 None 0.09 59.1 59.3 None 92.0 92.4 None 105.1 106.6 None PIPE12473 A4 ZPIP12879 2 0 1 CIRCULAR 0.021 RCP 3.7 3.8 None 0.11 6.0 6.0 None 8.8 8.9 None 10.0 10.1 None PIPE12514 A4 ZPIP16799 1.5 0 1 CIRCULAR 0.031 RCP 2.2 2.3 None 0.12 3.5 3.5 None 5.2 5.2 None 5.8 5.8 None PIPE12515 A4 ZPIP16800 3.5 0 1 CIRCULAR 0.055 RCP 27.5 27.8 None 0.12 44.5 44.5 None 65.9 65.0 None 74.7 73.4 None PIPE12677 A4 ZPIP10492 2 0 1 CIRCULAR 0.027 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 11.5 None PIPE12686 A4 ZPIP10497 3 0 1 CIRCULAR 0.032 RCP 8.3 8.3 None 0.07 19.6 19.6 None 31.6 31.6 None 36.8 36.8 None PIPE12952 A4 ZPIP14324 1.5 0 1 CIRCULAR 0.234 RCP 5.6 5.6 None 0.11 9.1 9.1 None 13.6 13.7 None 15.6 15.6 None PIPE12956 A4 ZPIP17179 1.5 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 3.0 None 0.0 3.5 Both Upstream and Downstream 0.0 3.8 Both Upstream and Downstream PIPE13100 A4 ZPIP15235 5 0 1 CIRCULAR 0.181 RCP 91.9 91.9 None 0.08 185.4 186.0 None 293.8 295.1 None 340.5 343.2 None PIPE13248 A4 ZPIP15655 2 0 1 CIRCULAR 0.114 RCP 8.7 8.7 None 0.11 14.2 14.2 None 21.0 21.0 None 23.8 23.8 None PIPE13414 A4 ZPIP11979 2 0 1 CIRCULAR 0.025 PVC 4.2 4.3 None 0.12 6.7 6.7 None 9.8 9.8 None 11.1 11.1 None PIPE12550 A4 ZPIP10377 2 0 1 CIRCULAR 0.027 RCP 4.3 4.3 None 0.11 6.8 6.8 None 9.9 9.9 None 11.2 11.2 None PIPE12871 A4 ZPIP13796 2 0 1 CIRCULAR 0.094 RCP 7.3 7.4 None 0.11 12.2 12.3 None 18.2 18.3 None 20.7 20.7 None PIPE13155 A4 ZPIP17444 4.5 0 1 CIRCULAR 0.062 RCP 44.4 44.6 None 0.09 81.9 82.1 None 127.1 127.1 None 146.5 146.3 None PIPE13259 A4 ZPIP15663 4 0 1 CIRCULAR 0.021 RCP 15.2 15.3 None 0.07 34.2 34.2 None 54.8 54.8 None 63.6 63.6 None PIPE13361 A4 ZPIP15975 1.5 0 1 CIRCULAR 0.023 RCP 1.4 1.4 None 0.09 2.3 2.3 None 3.3 3.3 None 3.8 4.8 None PIPE13380 A4 ZPIP16006 2 0 1 CIRCULAR 0.009 HDPE 2.3 2.3 None 0.11 3.8 3.8 None 5.7 5.7 None 6.4 6.4 None PIPE12328 A4 ZPIP12354 3 0 1 CIRCULAR 0.103 RCP 15.5 15.6 None 0.07 33.1 33.3 None 52.6 52.9 None 60.9 61.3 None PIPE12339 A4 ZPIP12460 2 0 1 CIRCULAR 0.041 RCP 3.5 3.5 None 0.08 6.7 6.7 None 10.5 10.9 None 12.0 13.4 None PIPE12376 A4 ZPIP10119 4 0 1 CIRCULAR 0.461 RCP 101.7 101.7 None 0.1 171.2 172.2 None 254.6 249.9 None 288.0 284.3 None PIPE12762 A4 ZPIP13348 1.5 0 1 CIRCULAR 0.008 RCP 1.1 1.1 None 0.11 1.7 1.7 None 2.4 2.4 None 2.7 2.7 None PIPE13048 A4 ZPIP14998 1.5 0 1 CIRCULAR 0.015 RCP 1.5 1.5 None 0.11 2.3 2.3 None 3.3 3.3 None 3.8 3.8 None PIPE13209 A4 ZPIP15585 2 0 1 CIRCULAR 0.019 PVC 3.3 3.3 None 0.11 5.3 5.3 None 7.8 7.9 None 8.9 8.9 None PIPE13238 A4 ZPIP15648 1.5 0 1 CIRCULAR 0.101 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 11.8 Downstream 0.0 9.7 Both Upstream and Downstream PIPE13239 A4 ZPIP15649 1.5 0 1 CIRCULAR 0.322 RCP 0.8 0.8 None 0.01 1.4 1.4 None 2.1 16.8 Downstream 2.4 17.5 Both Upstream and Downstream PIPE13421 A4 ZPIP12005 2 0 1 CIRCULAR 0.008 PVC 2.3 2.3 None 0.11 3.6 3.6 None 5.2 5.3 None 5.9 6.0 None PIPE12430 A4 ZPIP12590 1.5 0 1 CIRCULAR 0.159 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.7 None 0.0 11.7 None PIPE12495 A4 ZPIP10314 3.5 0 1 CIRCULAR 0.014 RCP 12.3 12.4 None 0.1 19.8 19.9 None 29.3 29.4 None 33.1 33.2 None PIPE12577 A4 ZPIP13063 2 0 1 CIRCULAR 0.233 RCP 9.8 9.8 None 0.09 17.6 17.6 None 26.7 26.7 None 30.5 30.4 None PIPE12617 A4 ZPIP10432 1.5 0 1 CIRCULAR 0.468 RCP 4.9 4.9 None 0.07 10.9 10.9 None 17.5 17.4 Downstream 20.3 20.2 Downstream PIPE12835 A4 ZPIP10675 1.5 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 4.7 None PIPE12868 A4 ZPIP17032 2.5 0 1 CIRCULAR 0.089 RCP 13.1 13.1 None 0.11 20.9 20.9 None 30.6 30.6 None 34.4 34.5 None CULV10210 A4 ZCUL13923 6 12 1 RECT_CLOSED 0.036 RCP 280.7 285.0 None 0.12 454.9 453.0 None 722.9 613.8 None 707.2 689.5 None PIPE13279 A4 ZPIP17529 2.5 0 1 CIRCULAR 0.052 HDPE 9.6 9.7 None 0.1 15.4 15.5 None 22.8 22.8 None 25.8 25.8 None PIPE13284 A4 ZPIP11793 1.5 0 1 CIRCULAR 0.010 HDPE 1.1 1.1 None 0.11 1.7 1.7 None 2.5 2.6 None 2.9 2.9 None PIPE13324 A4 ZPIP11830 3 0 1 CIRCULAR 0.011 RCP 21.7 9.3 None 0.13 34.6 11.5 None 47.0 17.5 None 52.1 19.6 None PIPE13337 A4 ZPIP17599 2 0 1 CIRCULAR 0.005 SRP 5.3 2.6 None 0.15 9.0 5.9 None 29.6 6.4 None 28.0 5.1 None PIPE13407 A4 ZPIP11971 1.5 0 1 CIRCULAR 0.014 RCP 1.3 1.3 None 0.11 2.1 2.1 None 3.1 3.1 None 3.5 3.5 None DTCH10278 A4 1.5 3 1 PARABOLIC 0.016 Concrete 0.0 0.0 None 0 0.0 0.1 None 0.0 2.0 None 0.0 6.5 None PIPE13064 A4 ZPIP11502 5 0 1 CIRCULAR 0.038 RCP 47.3 47.5 None 0.09 76.0 77.8 None 112.7 106.2 None 127.9 135.6 None PIPE13159 A4 ZPIP11657 3 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.8 None 0.0 13.2 None PIPE13208 A4 ZPIP15583 3 0 1 CIRCULAR 0.020 RCP 9.2 10.2 None 0.11 14.8 14.7 None 22.0 21.6 None 89.6 25.2 None PIPE13298 A4 ZPIP17537 3 0 1 CIRCULAR 0.047 HDPE 14.6 14.7 None 0.1 23.5 23.6 None 34.7 34.8 None 39.3 39.3 None PIPE13381 A4 ZPIP16007 2 0 1 CIRCULAR 0.011 HDPE 2.3 2.3 None 0.1 3.8 3.8 None 5.7 5.7 None 6.4 6.4 None CULV10241 A4 CUL16810C 8 0 2 CIRCULAR 0.024 SRP 412.9 313.2 None 0.1 748.4 488.4 Upstream 981.2 763.6 Upstream 2370.5 813.9 Upstream PIPE12548 A4 ZPIP16841 2.5 0 1 CIRCULAR 0.242 RCP 19.8 19.9 None 0.1 31.8 31.9 None 47.1 47.0 None 53.4 53.2 None PIPE12591 A4 ZPIP10419 2 0 1 CIRCULAR 0.167 RCP 7.5 7.5 None 0.08 12.0 12.0 None 17.7 23.2 None 20.0 23.7 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 55 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE12654 A4 ZPIP10480 2 0 1 CIRCULAR 0.013 RCP 2.1 2.1 None 0.08 3.8 3.8 None 5.8 5.8 None 6.6 6.6 None PIPE12781 A4 ZPIP13405 1.5 0 1 CIRCULAR 0.213 RCP 4.9 4.9 None 0.1 102.8 7.8 None 27.0 11.2 None 24.2 12.6 None PIPE12884 A4 ZPIP13825 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.6 Downstream 0.0 4.0 Both Upstream and Downstream PIPE13087 A4 ZPIP17374 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.6 0.6 None 2.1 1.1 None 2.7 3.7 None PIPE13261 A4 ZPIP15665 4 0 1 CIRCULAR 0.027 RCP 14.5 14.5 None 0.06 33.0 33.0 None 53.0 53.0 None 61.6 61.6 None PIPE13412 A4 ZPIP17651 2 0 1 CIRCULAR 0.037 RCP 4.2 4.3 None 0.1 6.7 6.7 None 9.8 9.8 None 11.1 11.1 None PIPE12369 A4 ZPIP12509 1.5 0 1 CIRCULAR 0.069 RCP 2.1 2.1 None 0.08 3.9 3.9 None 5.9 5.9 None 6.8 6.8 Downstream PIPE12647 A4 ZPIP10455 3 0 1 CIRCULAR 0.005 RCP 4.5 4.6 None 0.09 7.3 7.5 None 11.0 11.1 None 12.5 12.5 None PIPE12723 A4 ZPIP13295 4 0 1 CIRCULAR 0.058 RCP 20.5 20.6 None 0.06 46.8 46.9 None 75.4 75.4 None 86.8 87.6 None PIPE13185 A4 ZPIP15533 2.5 0 1 CIRCULAR 0.260 RCP 19.8 19.9 None 0.1 31.9 31.9 None 47.2 47.0 None 53.4 53.2 None PIPE13441 A4 ZPIP16556 3 0 1 CIRCULAR 0.014 RCP 0.5 9.8 None 0.12 0.9 5.6 None 1.5 21.4 None 16.4 19.4 Both Upstream and Downstream PIPE13555 A4 3 0 1 CIRCULAR 1.078 RCP 56.1 56.3 None 0.08 89.3 89.6 None 141.6 142.3 None 170.0 170.7 None PIPE12356 A4 ZPIP12498 2 0 1 CIRCULAR 0.382 RCP 11.9 11.9 None 0.09 19.4 19.4 None 28.7 28.7 None 32.5 33.3 None PIPE12434 A4 ZPIP12595 5 0 1 CIRCULAR 0.544 RCP 204.7 204.0 None 0.11 402.2 328.1 None 633.4 426.7 None 730.8 455.7 None PIPE12449 A4 ZPIP12734 4 0 1 CIRCULAR 0.042 RCP 21.3 21.4 None 0.07 39.6 39.6 None 60.2 60.3 None 69.2 69.3 None PIPE12465 A4 ZPIP12872 2 0 1 CIRCULAR 0.086 RCP 6.2 6.2 None 0.09 9.7 9.7 None 14.0 14.0 None 15.8 15.8 None PIPE12593 A4 ZPIP13103 3 0 1 CIRCULAR 0.022 RCP 6.4 6.4 None 0.06 12.6 12.7 None 20.3 20.3 None 23.4 23.5 None PIPE12722 A4 ZPIP10523 4 0 1 CIRCULAR 0.078 RCP 23.6 23.6 None 0.06 51.6 51.8 None 82.4 82.6 None 94.8 95.7 None PIPE12742 A4 ZPIP13318 3 0 1 CIRCULAR 0.022 RCP 6.5 6.5 None 0.07 12.9 12.9 None 20.5 20.6 None 23.7 23.7 None CULV10184 A4 ZCUL038B 5 0 1 CIRCULAR 0.017 CMP 15.4 10.0 Both Upstream and Downstream 0.05 13.0 20.4 Both Upstream and Downstream 16.5 42.8 Both Upstream and Downstream 20.0 43.7 Both Upstream and Downstream PIPE12877 A4 ZPIP10791 2 0 1 CIRCULAR 0.086 RCP 5.7 5.7 None 0.09 9.3 9.4 None 13.8 13.9 None 15.7 15.7 None PIPE12905 A4 ZPIP13851 1.5 0 1 CIRCULAR 0.076 RCP 2.5 2.5 None 0.09 4.1 4.1 None 6.0 6.0 None 6.8 6.8 Downstream PIPE13294 A4 ZPIP11797 2 0 1 CIRCULAR 0.020 HDPE 2.9 2.9 None 0.09 4.7 4.7 None 6.9 6.9 None 7.8 7.8 None PIPE13375 A4 ZPIP15987 2 0 1 CIRCULAR 0.149 RCP 8.0 8.0 None 0.09 12.5 12.5 None 18.2 18.2 None 20.6 20.6 None PIPE13456 A4 ZPIP12258 3 0 1 CIRCULAR 0.025 PVC 9.2 9.9 None 0.09 14.5 14.7 None 21.7 21.7 None 73.4 25.2 None PIPE12382 A4 ZPIP10120 1.5 0 1 CIRCULAR 0.249 RCP 4.6 4.6 None 0.09 7.3 7.3 None 10.8 10.7 None 12.1 12.1 None PIPE12787 A4 ZPIP13451 3 0 1 CIRCULAR 0.065 RCP 11.6 11.7 None 0.07 21.9 22.1 None 34.1 34.2 None 39.0 39.1 None PIPE12794 A4 ZPIP13481 2 0 1 CIRCULAR 0.019 RCP 2.0 2.0 None 0.06 4.0 4.0 None 6.3 6.4 None 7.3 7.3 None PIPE12876 A4 ZPIP10790 2 0 1 CIRCULAR 0.092 RCP 5.7 5.7 None 0.08 9.3 9.4 None 13.8 13.9 None 15.7 15.7 None PIPE12918 A4 ZPIP13897 3 0 1 CIRCULAR 0.058 RCP 14.3 14.3 None 0.09 22.7 22.7 None 33.3 33.2 None 37.5 37.4 None PIPE12933 A4 ZPIP11036 3 0 1 CIRCULAR 0.020 RCP 1.3 1.3 None 0.01 2.0 2.0 None 2.9 20.4 Both Upstream and Downstream 3.3 22.1 Both Upstream and Downstream PIPE12974 A4 ZPIP14470 1.5 0 1 CIRCULAR 0.318 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 10.1 None 0.0 13.9 Both Upstream and Downstream PIPE13023 A4 ZPIP17289 1.5 0 1 CIRCULAR 0.014 RCP 1.0 0.0 None 0 1.0 0.4 None 12.7 2.7 None 14.1 2.8 None PIPE13045 A4 ZPIP11396 4 0 1 CIRCULAR 0.031 RCP 1.2 0.8 None 0 2.4 1.1 None 53.5 49.1 None 59.9 58.5 None PIPE13143 A4 ZPIP17418 2 0 1 CIRCULAR 0.007 RCP 1.6 1.6 None 0.09 2.5 2.6 None 3.7 3.7 None 4.2 4.2 None PIPE13253 A4 ZPIP15660 5.5 0 1 CIRCULAR 0.142 RCP 77.7 77.6 None 0.06 159.9 160.2 None 248.9 249.8 None 286.7 288.0 None PIPE12504 A4 ZPIP12909 2 0 1 CIRCULAR 0.156 RCP 0.7 0.7 None 0.01 1.1 1.2 None 1.6 2.1 None 1.9 19.6 None PIPE12566 A4 ZPIP13049 1.5 0 1 CIRCULAR 0.098 RCP 2.7 2.7 None 0.08 4.4 4.4 None 6.4 6.4 None 7.2 7.2 None PIPE12605 A4 ZPIP16871 1.5 0 1 CIRCULAR 0.040 RCP 0.0 0.0 None 0 0.1 0.0 None 0.1 0.0 None 0.1 4.7 Both Upstream and Downstream PIPE12965 A4 ZPIP11125 2 0 1 CIRCULAR 0.026 RCP 9.3 4.0 None 0.11 19.8 7.3 None 37.0 7.3 None 36.4 8.1 None PIPE12968 A4 ZPIP17182 1.5 0 1 CIRCULAR 0.489 RCP 0.0 0.0 None 0 0.0 1.9 None 0.0 19.5 None 39.8 16.2 None PIPE13012 A4 ZPIP11285 2 0 1 CIRCULAR 0.026 RCP 2.9 2.9 None 0.08 13.8 4.8 None 32.4 7.3 None 31.5 8.1 None PIPE13018 A4 ZPIP14946 3.5 0 1 CIRCULAR 0.035 RCP 12.8 13.1 None 0.07 20.1 20.9 None 31.5 31.1 None 40.8 41.3 None PIPE13153 A4 ZPIP15375 4.5 0 1 CIRCULAR 0.107 RCP 41.8 41.9 None 0.07 77.3 77.5 None 120.0 121.2 None 138.2 139.8 None PIPE13338 A4 ZPIP17600 2 0 1 CIRCULAR 0.005 SRP 3.0 1.3 None 0.08 4.9 4.4 None 16.0 4.2 None 17.2 3.8 None PIPE13449 A4 ZPIP12246 2 0 1 CIRCULAR 0.145 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 19.2 None PIPE12584 A4 ZPIP10417 2 0 1 CIRCULAR 0.021 RCP 2.6 2.6 None 0.08 4.1 4.1 None 6.1 6.1 None 6.8 6.9 None PIPE12646 A4 ZPIP10454 3 0 1 CIRCULAR 0.005 RCP 3.6 3.8 None 0.08 6.0 6.1 None 9.0 8.8 None 10.1 10.0 None PIPE12692 A4 ZPIP13250 2.5 0 1 CIRCULAR 0.085 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 13.6 None 0.0 24.5 None PIPE12743 A4 ZPIP10533 3 0 1 CIRCULAR 0.191 RCP 18.3 18.5 None 0.06 34.6 34.6 None 52.5 52.4 None 60.7 61.6 None PIPE12816 A4 ZPIP10637 2.5 0 1 CIRCULAR 0.075 RCP 8.1 9.2 None 0.08 13.1 14.6 None 19.6 21.3 None 22.3 24.1 None PIPE13115 A4 ZPIP17403 2 0 1 CIRCULAR 0.038 RCP 3.6 3.6 None 0.08 5.7 5.7 None 8.3 8.3 None 9.4 9.4 None PIPE13129 A4 ZPIP11577 4 0 1 CIRCULAR 0.040 RCP 22.6 22.8 None 0.08 35.8 36.0 None 51.8 52.7 None 58.8 59.3 None PIPE13254 A4 ZPIP15661 4.5 0 1 CIRCULAR 0.475 RCP 77.7 77.6 None 0.06 159.9 160.2 None 248.9 249.8 None 286.7 288.0 None PIPE13485 A4 PIP20027 1.5 0 1 CIRCULAR 0.015 RCP 0.0 2.5 None 0.19 0.0 2.7 None 0.1 3.3 Both Upstream and Downstream 0.1 2.8 Both Upstream and Downstream PIPE12444 A4 ZPIP12636 2.5 0 1 CIRCULAR 0.119 RCP 6.5 6.5 None 0.05 15.2 15.2 None 24.5 24.5 None 28.6 28.6 None PIPE12512 A4 ZPIP16796 3.5 0 1 CIRCULAR 0.129 RCP 27.5 27.8 None 0.08 44.5 44.5 None 65.9 65.0 None 74.7 73.4 None PIPE12573 A4 ZPIP16855 1.5 0 1 CIRCULAR 0.209 RCP 3.4 5.6 None 0.12 19.9 6.2 None 9.2 10.9 Both Upstream and Downstream 10.0 9.7 Both Upstream and Downstream PIPE12741 A4 ZPIP13316 2.5 0 1 CIRCULAR 0.040 RCP 4.0 4.0 None 0.05 8.8 8.9 None 14.1 14.2 None 16.4 16.4 None PIPE12786 A4 ZPIP13450 3 0 1 CIRCULAR 0.071 RCP 10.7 10.7 None 0.06 20.0 20.1 None 31.1 31.2 None 35.5 35.7 None PIPE12832 A4 ZPIP10670 2 0 1 CIRCULAR 0.072 RCP 4.5 4.5 None 0.07 7.2 7.2 None 10.6 10.6 None 12.0 12.0 None PIPE12843 A4 ZPIP16998 1.5 0 1 CIRCULAR 0.041 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 4.3 None PIPE13042 A4 ZPIP14969 4.5 0 1 CIRCULAR 0.034 RCP 35.9 30.3 None 0.08 58.5 47.0 None 84.2 64.0 None 94.8 70.9 None PIPE13049 A4 ZPIP14999 2 0 1 CIRCULAR 0.071 RCP 4.2 4.2 None 0.07 7.1 7.1 None 10.5 10.6 None 12.0 12.0 None PIPE13174 A4 ZPIP15493 2 0 1 CIRCULAR 0.044 RCP 3.5 3.6 None 0.07 5.7 5.7 None 8.4 8.4 None 9.5 9.5 None PIPE13299 A4 ZPIP15742 2.5 0 1 CIRCULAR 0.068 RCP 5.4 5.5 None 0.05 8.7 8.7 None 12.7 19.6 None 14.3 21.9 None PIPE13604 A4 ZPIP12542 3 0 1 CIRCULAR 0.095 RCP 10.1 10.2 None 0.05 21.8 22.0 None 34.7 35.0 None 40.3 40.5 None PIPE12353 A4 ZPIP10108 1.5 0 1 CIRCULAR 0.043 RCP 1.6 1.6 None 0.07 2.5 2.5 None 3.7 3.7 None 4.2 4.2 None PIPE12372 A4 ZPIP12510 3 0 1 CIRCULAR 0.107 RCP 10.1 10.2 None 0.05 21.8 22.0 None 34.7 35.1 None 40.3 40.7 None PIPE12503 A4 ZPIP12908 2 0 1 CIRCULAR 0.279 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.2 None 0.0 23.1 None CULV10196 A4 ZCUL11684 6 12 1 RECT_CLOSED 0.253 RCP 574.8 583.8 None 0.09 940.8 934.4 None 1253.9 1249.7 None 1300.8 1260.7 None PIPE13051 A4 ZPIP17305 2 0 1 CIRCULAR 0.079 RCP 4.2 4.2 None 0.07 7.1 7.1 None 10.5 10.6 None 12.0 12.0 None PIPE13161 A4 ZPIP15453 5 0 1 CIRCULAR 0.013 RCP 11.4 11.8 None 0.04 18.2 21.1 None 23.1 59.8 None 23.9 56.5 Both Upstream and Downstream PIPE13205 A4 ZPIP15582 2 0 1 CIRCULAR 0.325 PVC 9.4 9.4 None 0.07 15.0 15.0 None 22.2 22.2 None 25.1 25.1 None PIPE13457 A4 ZPIP12259 3 0 1 CIRCULAR 0.019 RCP 0.1 9.0 None 0.1 0.2 3.6 None 0.4 20.3 None 5.1 17.2 Both Upstream and Downstream PIPE13502 A4 PIP10321 1.5 0 1 CIRCULAR 0.044 RCP 1.5 1.5 None 0.07 2.5 2.5 None 3.7 3.7 None 4.2 4.2 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 56 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13516 A4 2 0 1 CIRCULAR 0.004 RCP 1.1 1.1 None 0.07 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None PIPE13557 A4 ZPIP14757 1.5 0 1 CIRCULAR 0.040 RCP 1.4 1.4 None 0.07 2.3 2.3 None 3.5 3.5 None 30.6 3.9 None PIPE13521 A4 3 0 1 CIRCULAR 0.103 RCP 12.9 12.9 None 0.06 22.0 22.0 None 33.3 33.3 None 38.0 38.1 None PIPE12383 A4 ZPIP10121 1.5 0 1 CIRCULAR 0.441 RCP 4.6 4.6 None 0.07 7.3 7.3 None 10.8 10.7 None 12.1 12.1 None PIPE12776 A4 ZPIP13388 3 0 1 CIRCULAR 0.189 RCP 16.3 16.3 None 0.06 27.7 27.8 None 42.4 42.4 None 48.7 48.6 None PIPE12875 A4 ZPIP17037 2 0 1 CIRCULAR 0.093 RCP 4.2 4.2 None 0.06 7.1 7.1 None 10.5 10.6 None 12.0 12.0 None PIPE13234 A4 ZPIP15647 2.5 0 1 CIRCULAR 0.136 RCP 0.0 0.0 None 0 0.0 1.1 None 0.0 22.7 Both Upstream and Downstream 0.0 25.8 Both Upstream and Downstream PIPE13269 A4 ZPIP15672 2 0 1 CIRCULAR 0.078 RCP 4.0 4.0 None 0.06 6.3 6.3 None 9.3 9.3 None 10.5 10.5 None PIPE13379 A4 ZPIP11935 1.5 0 1 CIRCULAR 0.124 HDPE 2.3 2.3 None 0.06 3.8 3.8 None 5.7 5.7 None 6.4 6.4 None PIPE13575 A4 ZPIP10976 1.5 0 1 CIRCULAR 0.008 RCP 0.0 0.0 None 0 0.1 0.3 None 0.3 1.1 None 0.2 1.6 None PIPE12542 A4 ZPIP16838 2 0 1 CIRCULAR 0.059 RCP 3.4 3.5 None 0.06 5.4 5.4 None 7.9 7.9 None 8.8 8.9 None PIPE12626 A4 ZPIP10435 1.5 0 1 CIRCULAR 0.282 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 7.9 Downstream 0.0 9.0 Both Upstream and Downstream PIPE12638 A4 ZPIP10449 3 0 1 CIRCULAR 0.019 RCP 4.8 4.9 None 0.05 8.4 8.4 None 12.7 12.7 None 14.4 14.4 None PIPE12685 A4 ZPIP10496 3 0 1 CIRCULAR 0.619 RCP 15.9 23.3 None 0.04 35.9 45.2 None 60.2 72.5 None 70.3 83.2 None PIPE12826 A4 ZPIP10654 3 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 14.5 None PIPE12844 A4 ZPIP10695 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.6 None 0.0 1.7 None PIPE13383 A4 ZPIP16009 1.5 0 1 CIRCULAR 0.141 RCP 2.3 2.3 None 0.06 3.8 3.8 None 5.7 5.7 None 6.4 6.4 None PIPE13396 A4 ZPIP11966 1.5 0 1 CIRCULAR 0.018 RCP 0.9 0.9 None 0.06 1.4 1.4 None 2.1 2.1 None 2.3 2.3 None CULV10225 A4 ZCUL045C 4 0 1 CIRCULAR 0.060 RCP 20.5 17.2 None 0.05 31.8 31.0 None 55.7 48.5 None 70.2 55.4 None DTCH10382 A4 0 0 1 IRREGULAR 0.002 Concrete 314.8 284.4 None 0.08 466.9 395.1 None 573.4 503.1 None 625.3 542.2 None PIPE12702 A4 ZPIP10508 1.5 0 1 CIRCULAR 0.020 RCP 0.8 0.8 None 0.05 1.3 1.3 None 1.9 1.9 None 2.2 2.2 None PIPE13611 A4 ZPIP12472 2.5 0 1 CIRCULAR 0.518 RCP 14.3 14.4 None 0.05 26.7 26.7 None 41.0 38.9 None 47.1 44.5 None PIPE12414 A4 ZPIP10144 1.5 0 1 CIRCULAR 0.088 RCP 1.6 1.6 None 0.05 2.6 2.6 None 3.8 3.8 None 4.3 4.3 None PIPE12709 A4 ZPIP16901 3 0 1 CIRCULAR 0.018 RCP 0.8 0.9 None 0.01 1.3 3.7 None 2.1 14.0 None 2.4 12.5 None PIPE13122 A4 ZPIP15279 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.2 None 0.03 0.3 0.5 None 0.6 1.0 None 0.7 1.0 None PIPE13125 A4 ZPIP17407 1.5 0 1 CIRCULAR 0.234 RCP 2.5 2.5 None 0.05 4.1 4.1 None 6.2 6.2 None 7.0 7.0 None PIPE13343 A4 ZPIP15952 6 0 1 CIRCULAR 0.015 RCP 41.5 29.2 None 0.06 66.9 45.5 None 95.7 67.0 None 108.4 73.2 None PIPE13406 A4 ZPIP11970 2 0 1 CIRCULAR 0.041 RCP 2.2 2.2 None 0.05 3.8 3.8 None 5.7 5.7 None 6.5 6.5 None PIPE13495 A4 PIP10254 4 0 1 CIRCULAR 0.038 RCP 12.7 12.7 None 0.05 22.5 22.5 None 34.0 34.1 None 38.7 38.8 None PIPE12375 A4 ZPIP10118 1.5 0 1 CIRCULAR 0.102 RCP 1.6 1.6 None 0.05 2.6 2.6 None 3.8 3.8 None 4.3 4.3 None PIPE12788 A4 ZPIP16944 2 0 1 CIRCULAR 0.103 RCP 3.1 3.1 None 0.04 5.6 5.6 None 8.4 8.5 None 9.7 9.7 None PIPE12789 A4 ZPIP16945 2 0 1 CIRCULAR 0.111 RCP 3.1 3.1 None 0.04 5.6 5.6 None 8.4 8.5 None 9.7 9.7 None PIPE12817 A4 ZPIP13524 2 0 1 CIRCULAR 0.160 RCP 4.5 4.5 None 0.05 7.2 7.2 None 10.5 10.6 None 11.9 11.9 None PIPE13104 A4 ZPIP15258 1.5 0 1 CIRCULAR 0.039 RCP 1.0 1.0 None 0.05 1.6 1.6 None 2.3 2.3 None 2.6 2.6 None PIPE13128 A4 ZPIP11575 1.5 0 1 CIRCULAR 0.053 RCP 1.2 1.2 None 0.05 1.9 1.9 None 2.7 2.7 None 3.1 3.1 None DTCH10303 A4 0 0 1 IRREGULAR 0.066 Concrete 152.2 153.0 None 0.04 301.7 300.8 None 472.8 448.4 None 541.1 493.8 None DTCH10383 A4 0 0 1 IRREGULAR 0.010 Concrete 314.8 284.4 None 0.07 466.9 395.1 None 573.4 503.1 None 625.3 542.2 None PIPE12470 A4 ZPIP10303 2.5 0 1 CIRCULAR 0.234 RCP 8.7 8.7 None 0.04 14.2 14.3 None 21.1 21.2 None 23.9 24.0 None PIPE12703 A4 ZPIP10509 2 0 1 CIRCULAR 0.006 RCP 0.8 0.8 None 0.04 1.2 1.2 None 1.8 1.8 None 2.1 2.1 None PIPE13126 A4 ZPIP17408 1.5 0 1 CIRCULAR 0.234 RCP 2.2 2.2 None 0.04 3.6 3.6 None 5.5 5.5 None 6.3 6.3 None PIPE13286 A4 ZPIP15724 2 0 1 CIRCULAR 0.010 HDPE 1.1 1.1 None 0.05 1.7 1.7 None 2.5 2.6 None 2.9 2.9 None PIPE13342 A4 ZPIP11911 6 0 1 CIRCULAR 0.022 RCP 41.5 29.2 None 0.05 69.9 47.5 None 95.5 72.3 Downstream 105.2 72.7 Downstream PIPE13374 A4 ZPIP11928 2 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.4 None 0.0 1.4 None 0.0 1.9 None PIPE13382 A4 ZPIP16008 1.5 0 1 CIRCULAR 0.244 RCP 2.3 2.3 None 0.04 3.8 3.8 None 5.7 5.7 None 6.4 6.4 None DTCH10385 A4 0 0 1 IRREGULAR 0.010 Earthen 314.9 284.5 None 0.06 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None PIPE12424 A4 ZPIP12581 1.5 0 1 CIRCULAR 0.267 RCP 0.0 0.0 None 0 0.0 0.0 None 0.1 0.2 None 0.1 6.1 None PIPE12928 A4 ZPIP17115 4.5 0 1 CIRCULAR 0.465 RCP 44.4 44.6 None 0.03 81.9 82.1 None 127.1 127.2 None 146.5 146.4 None CULV10199 A4 ZCUL10956 4 6 1 RECT_CLOSED 0.290 RCP 52.6 49.8 None 0.03 83.0 76.1 None 138.4 169.6 None 151.3 190.1 None DTCH10397 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.3 None 0.06 466.9 395.2 None 573.5 503.2 None 625.4 542.3 None PIPE12830 A4 ZPIP13575 1.5 0 1 CIRCULAR 0.023 RCP 0.0 0.1 None 0.01 0.1 0.1 None 0.1 1.5 None 0.2 1.5 None PIPE12936 A4 ZPIP14286 3 0 1 CIRCULAR 0.043 RCP 1.3 1.3 None 0.01 2.0 2.0 None 3.0 17.8 Both Upstream and Downstream 3.3 14.2 Both Upstream and Downstream PIPE13038 A4 ZPIP11393 2 0 1 CIRCULAR 0.011 RCP 0.1 0.1 None 0 0.2 0.4 None 0.3 2.4 None 0.4 2.4 None PIPE13307 A4 ZPIP11808 1.5 0 1 CIRCULAR 0.040 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 2.1 None PIPE13496 A4 PIP10279 2 0 1 CIRCULAR 0.044 RCP 1.8 1.7 None 0.04 3.1 2.8 None 4.8 4.2 None 5.5 4.7 None PIPE13497 A4 PIP10280 2 0 1 CIRCULAR 0.044 RCP 1.7 1.6 None 0.03 3.0 2.8 None 4.6 4.2 None 5.2 4.7 None PIPE13498 A4 PIP10281 2 0 1 CIRCULAR 0.044 RCP 1.5 1.5 None 0.03 2.7 2.6 None 4.2 4.2 None 4.7 4.7 None PIPE13499 A4 PIP10286 2 0 1 CIRCULAR 0.044 RCP 1.5 1.5 None 0.03 2.5 2.5 None 3.7 4.0 None 4.1 4.6 None PIPE13522 A4 2.5 0 1 CIRCULAR 0.005 RCP 1.1 1.1 None 0.04 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None DTCH10339 A4 0 0 1 IRREGULAR 0.005 Earthen 368.6 252.9 None 0.05 645.8 324.5 None 804.0 441.4 None 962.1 470.8 None DTCH10362 A4 0 0 1 IRREGULAR 0.094 Earthen 77.2 77.2 None 0.03 159.1 159.4 None 247.4 248.2 None 285.6 286.8 None DTCH10384 A4 0 0 1 IRREGULAR 0.016 Earthen 314.9 284.5 None 0.05 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10386 A4 0 0 1 IRREGULAR 0.009 Earthen 314.9 284.5 None 0.05 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None PIPE12450 A4 ZPIP12774 1.5 0 1 CIRCULAR 0.065 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 Downstream 0.0 2.3 Downstream PIPE12708 A4 ZPIP16900 1.5 0 1 CIRCULAR 0.149 RCP 0.0 0.0 None 0 0.0 0.1 None 0.1 2.3 None 0.1 3.8 None PIPE12882 A4 ZPIP10800 3 0 1 CIRCULAR 0.398 RCP 14.3 14.3 None 0.03 22.7 22.7 None 33.2 33.2 None 37.4 37.4 None PIPE13405 A4 ZPIP11969 2 0 1 CIRCULAR 0.021 RCP 0.9 0.9 None 0.03 1.7 1.7 None 2.6 2.6 None 2.9 2.9 None PIPE13500 A4 PIP10287 2 0 1 CIRCULAR 0.044 RCP 1.5 1.5 None 0.03 2.5 2.5 None 3.7 3.7 None 4.2 4.2 None PIPE13501 A4 PIP10297 2 0 1 CIRCULAR 0.044 RCP 1.5 1.5 None 0.03 2.5 2.5 None 3.7 3.7 None 4.2 4.2 None PIPE13508 A4 PIP10428 4 0 1 CIRCULAR 0.093 RCP 12.7 12.7 None 0.03 22.4 22.4 None 33.9 33.9 None 38.7 38.7 None DTCH10368 A4 0 0 1 IRREGULAR 0.096 Earthen 76.3 76.2 None 0.02 155.6 155.8 None 244.6 245.1 None 282.5 283.2 None PIPE13614 A4 ZPIP15592 2.5 0 1 CIRCULAR 0.005 RCP 0.1 0.4 None 0.01 0.4 0.8 None 0.7 1.7 None 0.8 2.8 None PIPE12650 A4 ZPIP13209 3 0 1 CIRCULAR 0.337 HDPE 8.9 8.9 None 0.02 17.9 17.9 None 27.3 27.4 None 31.8 32.1 None PIPE13395 A4 ZPIP17648 3 0 1 CIRCULAR 0.037 RCP 3.9 3.9 None 0.03 6.1 6.1 None 9.0 9.0 None 10.1 10.1 None PIPE13538 A4 1.5 0 1 CIRCULAR 0.084 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 2.5 None DTCH10398 A4 0 0 1 IRREGULAR 0.009 Earthen 314.6 284.3 None 0.04 466.9 395.2 None 573.5 503.2 None 625.4 542.3 None PIPE12497 A4 ZPIP10315 2 0 1 CIRCULAR 0.022 RCP 0.8 0.9 None 0.03 1.3 1.3 None 1.9 1.9 None 2.2 2.2 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 57 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE12746 A4 ZPIP13320 1.5 0 1 CIRCULAR 0.206 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 2.4 None 0.0 3.2 None PIPE12865 A4 ZPIP16665 3 0 1 CIRCULAR 0.494 RCP 12.4 12.4 None 0.03 20.1 20.1 None 29.6 29.6 None 33.5 33.5 None PIPE12930 A4 ZPIP11032 2.25 0 1 CIRCULAR 0.004 RCP 0.2 0.0 None 0 0.3 0.1 None 0.4 0.1 None 0.5 1.4 None PIPE12985 A4 ZPIP14736 1.5 0 1 CIRCULAR 0.153 RCP 0.0 0.0 None 0 0.4 0.9 None 0.9 0.5 None 0.4 2.9 None PIPE13016 A4 ZPIP11382 4 0 1 CIRCULAR 0.017 RCP 0.2 0.4 None 0 0.3 0.5 None 1.2 0.6 None 0.5 13.2 None PIPE13275 A4 ZPIP15679 2 0 1 CIRCULAR 0.128 RCP 1.6 1.6 None 0.02 3.1 3.1 None 4.8 4.8 None 5.5 5.5 None PIPE13528 A4 4.5 0 1 CIRCULAR 0.006 RCP 0.9 2.0 None 0.01 2.2 4.2 None 3.2 11.0 None 3.6 11.3 None DTCH10381 A4 0 0 1 IRREGULAR 0.010 Concrete 314.8 284.4 Upstream 0.04 467.0 395.1 Upstream 573.4 503.1 Upstream 625.4 542.2 Upstream CHAN10445 A4 0 0 1 IRREGULAR 0.008 Concrete 38.1 38.1 None 0.02 69.6 69.6 None 110.8 110.8 None 127.0 126.9 None PIPE12614 A4 ZPIP16874 1.5 0 1 CIRCULAR 0.508 RCP 1.2 1.2 None 0.02 2.4 2.4 None 3.8 3.8 Downstream 4.3 4.3 Downstream PIPE12827 A4 ZPIP16973 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.8 None PIPE12961 A4 ZPIP14460 2 0 1 CIRCULAR 0.097 RCP 1.6 1.6 None 0.02 2.6 2.6 None 3.7 3.7 None 4.2 4.2 None PIPE13069 A4 ZPIP17371 1.5 0 1 CIRCULAR 0.013 RCP 0.1 0.1 None 0.01 0.1 0.1 None 0.2 0.6 None 0.2 0.7 None PIPE13150 A4 ZPIP15334 1.5 0 1 CIRCULAR 0.042 RCP 0.0 0.0 None 0 0.0 0.2 None 0.0 0.9 None 0.1 1.3 None PIPE13445 A4 ZPIP17866 2 0 1 CIRCULAR 0.131 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 4.6 None DTCH10364 A4 0 0 1 IRREGULAR 0.094 Earthen 76.9 76.8 None 0.02 158.3 158.6 None 246.6 247.3 None 284.7 285.7 None CHAN10409 A4 0 0 1 IRREGULAR 0.010 Concrete 394.0 284.3 None 0.03 642.6 393.8 Upstream 778.3 522.4 Upstream 3064.6 570.3 Upstream PIPE13612 A4 ZPIP15590 2.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.0 None 0.0 1.6 None PIPE12513 A4 ZPIP16797 2 0 1 CIRCULAR 0.155 RCP 1.6 1.6 None 0.02 2.6 2.6 None 3.8 3.8 None 4.2 4.2 None PIPE12711 A4 ZPIP10512 1.5 0 1 CIRCULAR 0.009 RCP 0.1 0.1 None 0 0.1 0.1 None 0.1 0.3 None 0.2 0.5 None PIPE13123 A4 ZPIP15280 3 0 2 CIRCULAR 0.005 RCP 0.4 0.7 None 0.01 0.7 2.2 None 0.9 3.5 None 1.1 5.0 None PIPE13157 A4 ZPIP15450 1.5 0 1 CIRCULAR 0.141 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 2.1 None PIPE13274 A4 ZPIP15678 2.5 0 1 CIRCULAR 0.086 RCP 1.6 1.6 None 0.01 3.0 3.0 None 4.7 4.7 None 5.4 5.4 None PIPE13276 A4 ZPIP15680 2 0 1 CIRCULAR 0.265 RCP 1.6 1.6 None 0.01 3.1 3.1 None 4.8 4.8 None 5.5 5.5 None PIPE13345 A4 ZPIP15954 1.5 0 1 CIRCULAR 0.072 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.2 None 0.0 1.3 None DTCH10302 A4 0 0 1 IRREGULAR 0.468 Concrete 152.3 153.0 None 0.02 301.8 301.0 None 472.9 456.5 None 541.2 493.8 None DTCH10365 A4 0 0 1 IRREGULAR 0.094 Earthen 76.7 76.6 None 0.01 157.1 157.4 None 246.2 246.8 None 284.4 285.4 None DTCH10376 A4 0 0 1 IRREGULAR 0.070 Earthen 49.8 49.5 None 0.02 97.0 89.8 None 155.1 136.8 None 180.4 148.7 None DTCH10399 A4 0 0 1 IRREGULAR 0.009 Earthen 314.5 284.2 None 0.03 466.9 395.1 None 573.5 503.2 None 625.4 542.3 None PIPE12432 A4 ZPIP10156 3.667 0 1 CIRCULAR 0.481 RCP 11.7 11.6 None 0.01 19.9 20.4 None 30.1 27.4 None 34.3 30.8 Downstream PIPE12637 A4 ZPIP10448 3 0 1 CIRCULAR 0.252 RCP 4.8 4.9 None 0.01 8.4 8.4 None 12.7 12.7 None 14.4 14.4 None PIPE12683 A4 ZPIP13244 4.5 0 1 CIRCULAR 0.054 RCP 3.9 3.9 None 0.01 6.1 6.1 None 9.0 9.0 None 10.1 19.8 None PIPE12690 A4 ZPIP13248 2.5 0 1 CIRCULAR 0.052 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 4.2 None PIPE13137 A4 ZPIP11581 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.1 None 0.3 0.5 None 0.4 0.4 None PIPE13173 A4 ZPIP11677 1.5 0 1 CIRCULAR 0.100 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.4 None 0.0 1.4 None PIPE13462 A4 ZPIP16590 2 0 1 CIRCULAR 0.124 RCP 1.1 1.1 None 0.01 1.8 1.8 None 2.6 2.6 None 3.0 3.0 None FLOW10040 A4 4 10 1 TRAPEZOIDAL 0.093 EARTHEN 14.6 14.7 None 0 23.5 23.6 None 34.7 34.8 None 39.3 39.2 None DTCH10338 A4 0 0 1 IRREGULAR 0.028 Earthen 368.6 252.9 None 0.02 645.8 324.5 None 804.0 441.4 None 962.1 470.8 None DTCH10363 A4 0 0 1 IRREGULAR 0.094 Earthen 77.0 76.9 None 0.01 158.5 158.8 None 246.9 247.7 None 285.2 286.3 None DTCH10371 A4 0 0 1 IRREGULAR 0.094 Earthen 75.4 75.3 None 0.01 154.5 154.6 None 242.9 243.3 None 281.2 281.8 None DTCH10372 A4 0 0 1 IRREGULAR 0.094 Earthen 75.2 75.1 None 0.01 154.3 154.5 None 242.8 243.2 None 280.9 281.6 None DTCH10400 A4 0 0 1 IRREGULAR 0.008 Earthen 314.5 284.2 None 0.02 466.9 395.1 None 573.5 503.2 None 625.4 542.3 None DTCH10404 A4 0 0 1 IRREGULAR 0.008 Earthen 314.4 284.2 None 0.02 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None DTCH10408 A4 0 0 1 IRREGULAR 0.018 Earthen 314.4 284.1 None 0.02 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None PIPE12480 A4 ZPIP12886 1.5 0 1 CIRCULAR 0.025 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.2 None 0.0 0.5 None PIPE12636 A4 ZPIP10447 2 0 1 CIRCULAR 0.005 RCP 0.2 0.1 None 0.01 0.3 0.2 None 0.4 0.4 None 0.4 0.4 None PIPE12929 A4 ZPIP14276 1.5 0 1 CIRCULAR 0.033 RCP 0.1 0.1 None 0 0.1 0.6 None 0.2 0.6 None 0.2 0.6 None PIPE12949 A4 ZPIP11054 1.5 0 1 CIRCULAR 0.005 RCP 0.1 0.2 None 0.03 0.3 0.2 None 0.4 0.2 None 0.4 0.2 None PIPE12962 A4 ZPIP14461 2 0 1 CIRCULAR 0.399 RCP 1.6 1.6 None 0.01 2.6 2.6 None 3.7 3.7 None 4.2 4.2 None PIPE12963 A4 ZPIP14462 2 0 1 CIRCULAR 0.327 RCP 1.6 1.6 None 0.01 2.6 2.6 Downstream 3.7 3.7 Downstream 4.2 4.2 Downstream PIPE13191 A4 ZPIP15548 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.3 None PIPE13386 A4 ZPIP16040 2 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.7 None PIPE13518 A4 2.5 0 1 CIRCULAR 0.060 RCP 1.1 1.1 None 0.01 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None PIPE13531 A4 4.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.2 None 0.0 4.3 None DTCH10312 A4 0 0 1 IRREGULAR 0.065 Concrete 147.5 148.1 None 0.01 294.3 293.8 None 463.1 434.7 None 532.6 491.8 None DTCH10361 A4 0 0 1 IRREGULAR 0.094 Earthen 77.5 77.4 None 0.01 159.5 159.9 None 248.5 249.4 None 286.3 287.6 None DTCH10366 A4 0 0 1 IRREGULAR 0.094 Earthen 76.5 76.4 None 0.01 156.2 156.5 None 245.1 245.7 None 283.0 283.9 None DTCH10367 A4 0 0 1 IRREGULAR 0.094 Earthen 76.4 76.3 None 0.01 156.1 156.4 None 244.9 245.4 None 282.8 283.6 None DTCH10373 A4 0 0 1 IRREGULAR 0.205 Earthen 75.2 75.1 None 0.01 154.3 154.4 None 242.7 243.1 None 280.8 281.4 None CHAN10398 A4 0 0 1 IRREGULAR 0.017 Earthen 311.7 310.3 None 0.01 584.9 577.8 None 905.3 897.0 None 1051.0 1078.4 None CHAN10410 A4 0 0 1 IRREGULAR 0.029 Concrete 394.0 284.3 None 0.02 642.6 393.8 None 778.3 521.1 None 3042.0 570.1 None DTCH10390 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.4 None 0.02 466.9 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10391 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.4 None 0.02 466.9 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10401 A4 0 0 1 IRREGULAR 0.009 Earthen 314.5 284.2 None 0.02 466.9 395.1 None 573.5 503.2 None 625.4 542.3 None DTCH10402 A4 0 0 1 IRREGULAR 0.009 Earthen 314.5 284.2 None 0.01 466.8 395.1 None 573.5 503.2 None 625.4 542.3 None CHAN10473 A4 ZCH10120 0 0 1 IRREGULAR 0.013 EARTHEN 575.1 588.2 None 0.01 933.0 927.1 Upstream 1238.2 1240.9 Upstream 1287.7 1245.1 Upstream CHAN10474 A4 ZCH10120 0 0 1 IRREGULAR 0.013 EARTHEN 571.9 584.1 None 0.01 923.1 917.7 Downstream 1225.9 1235.5 Downstream 1275.8 1252.8 Downstream PIPE12568 A4 ZPIP13051 1.5 0 1 CIRCULAR 0.062 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.5 None PIPE12682 A4 ZPIP13243 4.5 0 1 CIRCULAR 0.056 RCP 3.9 3.9 None 0.01 6.1 6.1 None 9.0 9.0 None 10.1 10.1 None PIPE12850 A4 ZPIP13635 1.5 0 1 CIRCULAR 0.086 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.6 None 0.0 0.7 None PIPE13026 A4 ZPIP17291 1.5 0 1 CIRCULAR 0.019 RCP 0.2 0.3 None 0.02 0.3 0.3 None 1.3 0.3 None 1.2 0.3 None PIPE13180 A4 ZPIP11682 1.5 0 1 CIRCULAR 0.111 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.6 None PIPE13245 A4 ZPIP11758 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.3 None PIPE13273 A4 ZPIP15677 4 0 1 CIRCULAR 0.063 RCP 1.6 1.6 None 0 3.0 3.0 None 4.7 4.7 None 5.4 5.4 None CULV10223 A4 ZCUL045A 4 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 1.0 None 0.2 3.5 None 3.3 3.6 None PIPE13463 A4 ZPIP16591 2 0 1 CIRCULAR 0.627 RCP 1.1 1.1 None 0.01 1.8 1.8 None 2.6 2.6 None 3.0 3.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 58 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13517 A4 2.5 0 1 CIRCULAR 0.137 RCP 1.1 1.1 None 0.01 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None CHAN10358 A4 ZCH10136 0 0 1 IRREGULAR 0.013 Concrete 139.3 138.9 None 0.01 250.0 235.3 None 442.3 372.9 None 507.8 415.1 None DTCH10300 A4 DD032C 0 0 1 IRREGULAR 0.010 Earthen 317.0 283.0 None 0.01 484.7 392.7 None 586.2 500.8 None 636.4 540.1 None DTCH10304 A4 0 0 1 IRREGULAR 0.066 Concrete 151.8 152.6 None 0.01 301.2 300.3 None 471.9 445.2 None 540.5 493.6 None DTCH10307 A4 0 0 1 IRREGULAR 0.063 Concrete 149.3 150.0 None 0.01 297.6 296.9 None 468.1 438.5 None 536.9 492.8 None DTCH10319 A4 0 0 1 IRREGULAR 0.102 Concrete 15.4 15.4 None 0 34.7 34.7 None 55.0 54.9 None 63.6 63.6 None DTCH10349 A4 0 0 1 IRREGULAR 0.008 Earthen 42.4 42.7 None 0.01 66.6 66.9 None 105.0 105.5 None 120.5 121.0 None DTCH10360 A4 0 0 1 IRREGULAR 0.205 Earthen 77.7 77.6 None 0.01 159.8 160.2 None 248.8 249.7 None 286.6 287.9 None DTCH10375 A4 0 0 1 IRREGULAR 0.070 Earthen 50.0 49.8 None 0.01 97.4 90.4 None 155.8 140.3 None 181.4 149.0 None DTCH10378 A4 0 0 1 IRREGULAR 0.070 Earthen 49.1 48.8 None 0.01 95.8 88.9 None 153.9 135.1 None 179.2 148.0 None CHAN10407 A4 CH033C 0 0 1 IRREGULAR 0.024 Earthen 385.7 277.7 Upstream 0.01 633.3 373.8 Upstream 771.7 473.7 Upstream 2986.0 514.7 Upstream DTCH10387 A4 0 0 1 IRREGULAR 0.009 Earthen 314.8 284.4 None 0.01 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10388 A4 0 0 1 IRREGULAR 0.009 Earthen 314.8 284.4 None 0.01 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10389 A4 0 0 1 IRREGULAR 0.009 Earthen 314.8 284.4 None 0.01 466.9 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10394 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.3 None 0.01 466.9 395.2 None 573.5 503.2 None 625.4 542.3 None DTCH10395 A4 0 0 1 IRREGULAR 0.008 Earthen 314.7 284.3 None 0.01 466.9 395.2 None 573.5 503.2 None 625.4 542.3 None DTCH10396 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.3 None 0.01 466.9 395.2 None 573.5 503.2 None 625.4 542.3 None DTCH10403 A4 0 0 1 IRREGULAR 0.009 Earthen 314.5 284.2 None 0.01 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None DTCH10406 A4 0 0 1 IRREGULAR 0.009 Earthen 314.4 284.1 None 0.01 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None DTCH10407 A4 0 0 1 IRREGULAR 0.009 Earthen 314.4 284.1 None 0.01 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None DTCH10410 A4 0 0 1 IRREGULAR 0.023 Concrete 61.5 61.5 None 0.01 114.8 114.4 None 186.6 185.0 None 220.9 210.7 None CHAN10423 A4 ZCH10010 0 0 1 IRREGULAR 0.018 EARTHEN 600.8 584.0 Upstream 0.01 931.4 917.2 Upstream 1263.6 1223.0 Upstream 1349.6 1272.3 Upstream CHAN10424 A4 ZCH10010 0 0 1 IRREGULAR 0.018 EARTHEN 616.8 590.1 Downstream 0.01 929.8 913.6 Downstream 1260.6 1208.1 Downstream 1347.2 1252.2 Downstream CHAN10439 A4 0 0 1 IRREGULAR 0.016 Concrete 30.5 30.5 None 0.01 58.1 58.0 None 96.7 96.7 None 115.9 115.8 None CHAN10444 A4 0 0 1 IRREGULAR 0.016 Concrete 29.0 29.0 None 0.01 53.7 53.7 None 86.1 86.0 None 99.8 99.6 None CHAN10457 A4 0 0 1 IRREGULAR 0.029 Earthen 166.8 167.2 None 0.01 318.7 314.4 None 492.9 478.9 None 576.4 553.8 None PIPE12417 A4 ZPIP10148 1.5 0 1 CIRCULAR 0.078 RCP 0.0 0.0 None 0 0.0 0.5 None 0.1 0.4 None 0.1 0.4 None PIPE12555 A4 ZPIP19002 2 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.2 None PIPE12710 A4 ZPIP16902 3 0 1 CIRCULAR 0.016 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.1 None 0.0 1.0 None PIPE12769 A4 ZPIP10557 1.5 0 1 CIRCULAR 0.332 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.6 Downstream PIPE12774 A4 ZPIP10565 2 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.2 None PIPE12887 A4 ZPIP10804 6 0 1 CIRCULAR 0.020 RCP 2.7 2.7 None 0 4.4 4.4 None 6.5 6.5 None 7.4 7.4 None PIPE13031 A4 ZPIP14958 1.5 0 1 CIRCULAR 0.010 RCP 0.1 0.1 None 0.01 0.1 0.1 None 0.2 0.1 None 0.2 0.1 None PIPE13068 A4 ZPIP17370 1.5 0 1 CIRCULAR 0.051 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.2 None PIPE13116 A4 ZPIP17404 1.5 0 1 CIRCULAR 0.083 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.4 None PIPE13177 A4 ZPIP17478 1.5 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.1 None 0.0 0.1 None 0.1 0.1 None PIPE13215 A4 ZPIP17513 1.5 0 1 CIRCULAR 0.004 RCP 0.1 0.1 None 0.01 0.2 0.1 None 0.2 0.1 None 0.3 0.1 None PIPE13268 A4 ZPIP15671 1.5 0 1 CIRCULAR 0.008 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None PIPE13369 A4 ZPIP15985 2 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.3 None PIPE13560 A4 ZPIP10453 3 0 1 CIRCULAR 0.004 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.2 None 0.0 0.3 None CHAN10355 A4 ZCH10011 0 0 1 IRREGULAR 0.018 EARTHEN 596.2 599.5 None 0.01 943.8 925.0 Upstream 1272.3 1237.2 Upstream 1355.1 1282.3 Upstream CHAN10356 A4 ZCH10011 0 0 1 IRREGULAR 0.018 EARTHEN 591.4 595.1 Downstream 0.01 937.9 921.0 Downstream 1267.1 1231.7 Downstream 1352.6 1280.0 Downstream CHAN10357 A4 ZCH10136 0 0 1 IRREGULAR 0.035 Concrete 152.2 150.2 None 0 266.4 249.6 None 412.8 348.1 None 469.2 388.4 None CHAN10359 A4 ZCH10136 0 0 1 IRREGULAR 0.035 Concrete 138.6 138.3 None 0 244.9 232.0 None 421.0 362.6 None 484.6 404.1 None DTCH10288 A4 DD032A 0 0 1 IRREGULAR 0.010 Earthen 316.4 284.3 None 0 470.4 394.4 None 575.3 502.3 None 626.5 541.4 None DTCH10289 A4 DD032A 0 0 1 IRREGULAR 0.010 Earthen 315.1 284.1 None 0 467.5 394.1 None 573.2 502.2 None 624.9 541.2 None DTCH10290 A4 DD032A 0 0 1 IRREGULAR 0.010 Earthen 314.2 283.8 None 0 466.0 394.0 None 572.2 502.1 None 624.0 541.1 None DTCH10291 A4 DD032A 0 0 1 IRREGULAR 0.120 Earthen 314.0 283.7 Downstream 0 466.0 394.0 Downstream 572.2 502.1 Downstream 624.1 541.1 Downstream DTCH10292 A4 DD032B 0 0 1 IRREGULAR 0.007 Earthen 315.8 282.3 None 0.01 486.1 391.2 None 605.5 499.7 None 674.3 539.5 None DTCH10293 A4 DD032B 0 0 1 IRREGULAR 0.007 Earthen 315.8 282.3 None 0.01 486.1 391.2 None 605.4 499.7 None 674.1 539.5 None DTCH10294 A4 DD032C 0 0 1 IRREGULAR 0.027 Earthen 316.9 283.1 None 0 487.8 392.7 None 607.2 501.2 None 676.7 541.1 None DTCH10295 A4 DD032C 0 0 1 IRREGULAR 0.010 Earthen 316.9 283.1 None 0 487.8 392.7 None 606.8 501.2 None 675.7 541.1 None DTCH10296 A4 DD032C 0 0 1 IRREGULAR 0.010 Earthen 316.9 283.1 None 0 487.7 392.7 None 604.8 501.1 None 671.2 541.0 None DTCH10297 A4 DD032C 0 0 1 IRREGULAR 0.009 Earthen 316.8 283.1 None 0.01 487.6 392.7 None 601.0 501.1 None 662.8 540.9 None DTCH10298 A4 DD032C 0 0 1 IRREGULAR 0.010 Earthen 316.8 283.1 None 0.01 487.1 392.7 None 596.0 501.1 None 651.2 540.7 None DTCH10299 A4 DD032C 0 0 1 IRREGULAR 0.010 Earthen 316.9 283.0 None 0.01 486.0 392.7 None 590.6 501.0 None 642.2 540.4 None CHAN10364 A4 0 0 1 IRREGULAR 0.016 Earthen 331.1 329.9 None 0 636.9 646.9 None 1010.4 1033.0 None 1170.2 1165.7 None CHAN10372 A4 0 0 1 IRREGULAR 0.019 Earthen 331.0 329.7 None 0 625.9 631.4 None 1005.5 1025.7 None 1166.4 1164.0 None CHAN10373 A4 0 0 1 IRREGULAR 0.020 Earthen 331.0 329.7 None 0 625.8 631.4 None 1005.3 1025.5 None 1166.0 1163.7 None CHAN10374 A4 0 0 1 IRREGULAR 0.018 Earthen 331.5 330.2 None 0 627.4 632.9 None 1007.4 1027.5 None 1168.3 1166.2 None CHAN10375 A4 0 0 1 IRREGULAR 0.021 Earthen 331.4 330.1 None 0 627.2 632.7 None 1007.0 1026.9 Downstream 1167.5 1165.6 Downstream CHAN10378 A4 0 0 1 IRREGULAR 0.004 Earthen 330.7 328.2 None 0 628.3 583.0 Upstream 997.8 862.6 Upstream 1149.8 880.6 Upstream DTCH10305 A4 0 0 1 IRREGULAR 0.064 Concrete 150.8 151.5 None 0 299.9 299.1 None 470.1 441.0 None 539.0 493.2 None DTCH10306 A4 0 0 1 IRREGULAR 0.067 Concrete 149.6 150.3 None 0 298.8 298.1 None 469.0 439.3 None 537.9 493.0 None DTCH10308 A4 0 0 1 IRREGULAR 0.066 Concrete 148.7 149.4 None 0 296.4 295.8 None 466.4 437.1 None 535.7 492.5 None DTCH10309 A4 0 0 1 IRREGULAR 0.069 Concrete 148.3 148.9 None 0 295.1 294.6 None 465.4 436.0 None 534.6 492.2 None DTCH10310 A4 0 0 1 IRREGULAR 0.064 Concrete 147.9 148.5 None 0 294.6 294.1 None 463.9 435.2 None 533.4 492.0 None DTCH10311 A4 0 0 1 IRREGULAR 0.065 Concrete 147.6 148.2 None 0 294.3 293.8 None 463.3 434.8 None 532.9 491.8 None DTCH10313 A4 0 0 1 IRREGULAR 0.065 Concrete 147.3 147.8 None 0 293.5 293.0 None 462.1 434.1 None 531.8 491.5 None DTCH10314 A4 0 0 1 IRREGULAR 0.065 Concrete 147.1 147.6 None 0 293.5 292.6 None 461.0 433.1 None 530.7 491.0 None DTCH10315 A4 0 0 1 IRREGULAR 0.065 Concrete 146.8 147.3 None 0.01 292.3 292.1 None 460.6 362.7 None 530.5 356.0 None DTCH10320 A4 0 0 1 IRREGULAR 0.102 Concrete 15.2 15.2 None 0 34.4 34.4 None 54.7 54.7 None 63.3 63.3 None CHAN10386 A4 CH033B 0 0 1 IRREGULAR 0.030 Earthen 395.2 285.3 None 0 644.7 399.1 None 781.0 537.0 Upstream 2732.0 589.2 Upstream CHAN10387 A4 CH033B 0 0 1 IRREGULAR 0.008 Earthen 394.6 285.2 None 0.01 644.5 399.1 None 781.0 534.3 None 2679.1 586.0 None CHAN10388 A4 CH033B 0 0 1 IRREGULAR 0.007 Earthen 393.3 285.1 None 0 643.9 399.0 None 781.0 525.4 None 2645.1 576.4 None DTCH10336 A4 CH033B 0 0 1 IRREGULAR 0.005 Earthen 415.2 415.6 None 0 648.4 416.7 None 787.1 555.5 None 2617.4 610.3 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 59 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
DTCH10340 A4 0 0 1 IRREGULAR 0.023 Earthen 368.6 252.9 None 0 645.8 324.5 None 804.0 441.4 None 962.1 470.8 None DTCH10341 A4 0 0 1 IRREGULAR 0.042 Earthen 364.6 250.4 Upstream 0 639.1 320.6 Upstream 795.0 438.3 Upstream 981.2 466.7 Upstream DTCH10342 A4 0 0 1 IRREGULAR 0.039 Earthen 364.4 250.4 Downstream 0 638.0 320.6 Downstream 794.5 437.9 Downstream 954.9 466.5 Downstream CHAN10395 A4 CH033A 0 0 1 IRREGULAR 0.003 Earthen 316.7 282.3 Upstream 0.01 488.0 391.3 Upstream 606.1 499.8 Upstream 677.9 539.6 Upstream CHAN10396 A4 CH033A 0 0 1 IRREGULAR 0.006 Earthen 315.9 282.3 Downstream 0 486.4 391.3 Downstream 605.6 499.7 Downstream 675.0 539.5 Downstream DTCH10347 A4 0 0 1 IRREGULAR 0.309 Concrete 20.6 20.4 None 0 35.9 36.7 None 56.3 56.4 None 65.0 64.7 None DTCH10348 A4 0 0 1 IRREGULAR 0.019 Earthen 44.1 44.3 None 0 70.0 70.4 None 105.6 106.2 None 122.5 123.1 None DTCH10350 A4 0 0 1 IRREGULAR 0.009 Earthen 41.2 41.4 None 0 65.3 66.2 None 106.2 106.5 None 117.7 118.1 None DTCH10351 A4 0 0 1 IRREGULAR 0.008 Earthen 41.1 41.3 None 0 83.2 83.8 None 115.1 115.5 None 127.5 127.8 None DTCH10352 A4 0 0 1 IRREGULAR 0.009 Earthen 41.3 41.4 None 0 62.6 63.0 None 110.3 110.7 None 123.6 123.9 None DTCH10353 A4 0 0 1 IRREGULAR 0.008 Earthen 40.6 40.8 None 0 61.4 61.2 None 104.0 104.4 None 118.7 119.1 None DTCH10354 A4 0 0 1 IRREGULAR 0.020 Earthen 40.2 40.3 None 0 59.9 59.6 None 101.5 101.9 None 116.6 117.0 None DTCH10355 A4 0 0 1 IRREGULAR 0.140 Earthen 27.5 27.3 None 0 56.1 50.1 None 93.4 74.8 None 109.2 80.8 None DTCH10356 A4 0 0 1 IRREGULAR 0.294 Earthen 27.5 27.2 None 0 56.1 50.1 None 93.3 74.8 None 109.1 80.8 None DTCH10358 A4 0 0 1 IRREGULAR 0.175 Earthen 14.0 14.0 None 0 22.3 22.4 None 32.6 32.8 None 37.0 37.1 None CHAN10397 A4 0 0 1 IRREGULAR 0.100 Earthen 312.1 310.7 None 0 585.0 577.9 None 906.7 918.2 None 1051.6 1173.9 None CHAN10400 A4 0 0 1 IRREGULAR 0.020 Earthen 314.0 312.6 None 0 589.2 582.2 None 917.8 910.4 None 1064.1 1060.8 None DTCH10374 A4 0 0 1 IRREGULAR 0.369 Earthen 50.2 50.0 None 0 97.7 93.3 None 156.2 142.7 None 181.9 149.2 None DTCH10377 A4 0 0 1 IRREGULAR 0.070 Earthen 49.6 49.3 None 0 96.7 89.6 None 154.7 136.1 None 180.0 148.5 None DTCH10379 A4 0 0 1 IRREGULAR 0.070 Earthen 48.9 48.6 None 0 95.5 88.7 None 153.4 134.7 None 178.7 147.8 None DTCH10380 A4 0 0 1 IRREGULAR 0.011 Concrete 38.8 38.8 None 0 82.6 78.5 None 136.6 121.6 None 160.9 136.6 None CHAN10406 A4 CH033C 0 0 1 IRREGULAR 0.058 Earthen 357.8 259.1 Downstream 0.01 596.3 337.9 Downstream 730.1 448.5 Downstream 2941.3 483.5 Downstream CHAN10408 A4 CH033C 0 0 1 IRREGULAR 0.169 Earthen 385.5 277.7 Downstream 0 631.0 373.8 Downstream 772.9 473.5 Downstream 2996.3 514.7 Downstream DTCH10392 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.3 None 0.01 466.9 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10393 A4 0 0 1 IRREGULAR 0.009 Earthen 314.7 284.3 None 0.01 466.9 395.2 None 573.5 503.2 None 625.5 542.3 None DTCH10405 A4 0 0 1 IRREGULAR 0.009 Earthen 314.4 284.1 None 0.01 466.8 395.1 None 573.4 503.2 None 625.4 542.3 None DTCH10409 A4 0 0 1 IRREGULAR 0.298 Concrete 63.4 63.5 None 0 114.9 114.5 None 186.8 175.2 None 221.3 197.8 None DTCH10411 A4 0 0 1 IRREGULAR 0.298 Concrete 60.7 60.9 None 0 114.7 114.3 None 186.2 267.2 None 220.0 259.6 None CHAN10425 A4 ZCH10063A 0 0 1 IRREGULAR 0.002 Concrete 24.3 23.8 None 0 42.3 40.4 None 63.4 59.0 None 73.0 66.8 None CHAN10428 A4 0 0 1 IRREGULAR 0.016 Concrete 50.5 50.5 None 0 90.3 90.5 None 146.7 147.2 None 169.7 172.1 None CHAN10434 A4 0 0 1 IRREGULAR 0.016 Concrete 40.9 40.9 None 0 77.3 77.3 None 126.2 126.0 None 146.4 145.6 None CHAN10435 A4 0 0 1 IRREGULAR 0.016 Concrete 38.6 38.6 None 0 74.7 74.7 None 122.3 122.1 None 141.2 140.6 None CHAN10443 A4 0 0 1 IRREGULAR 0.016 Concrete 29.2 29.2 None 0 54.0 53.9 None 86.2 86.2 None 100.2 100.0 None CHAN10446 A4 0 0 1 IRREGULAR 0.016 Concrete 35.1 35.1 None 0 67.9 67.8 None 111.5 111.5 None 127.5 127.3 None CHAN10456 A4 0 0 1 IRREGULAR 0.110 Earthen 166.3 166.7 None 0 319.5 315.2 None 493.2 479.1 None 576.8 554.2 None CHAN10458 A4 0 0 1 IRREGULAR 0.110 Earthen 166.6 166.9 None 0 318.4 314.1 None 492.8 478.9 None 576.3 553.7 None CHAN10459 A4 CH033A 0 0 1 IRREGULAR 0.015 Earthen 418.8 302.4 None 0 724.9 495.7 None 890.9 773.4 None 2298.1 822.6 None CHAN10460 A4 CH033A 0 0 1 IRREGULAR 0.007 Earthen 415.7 302.3 None 0 713.8 494.5 None 859.1 757.8 None 2115.1 798.7 None DTCH10421 A4 0 0 1 IRREGULAR 0.052 Earthen 56.0 56.2 None 0 89.3 89.6 None 141.2 141.9 None 169.7 170.4 None CHAN10466 A4 0 0 1 IRREGULAR 0.033 Earthen 364.3 259.5 Downstream 0 651.3 347.0 Downstream 802.8 597.5 Downstream 1364.6 640.3 Downstream CHAN10467 A4 CH033C 0 0 1 IRREGULAR 0.039 Earthen 114.4 114.7 None 0 211.4 205.9 None 332.4 316.5 None 392.4 368.0 None CHAN10468 A4 CH033C 0 0 1 IRREGULAR 0.057 Earthen 113.7 114.0 None 0 210.3 205.0 None 330.7 315.1 None 390.2 366.4 None CHAN10469 A4 CH033C 0 0 1 IRREGULAR 0.057 Earthen 112.4 112.7 None 0 208.0 203.3 None 327.7 312.4 None 386.6 363.5 None CHAN10788 A4 0 0 1 IRREGULAR 0.018 Earthen 368.4 252.7 None 0 645.4 324.3 None 803.5 441.2 None 961.9 470.6 None CHAN10327 A4 ZCH10040 0 0 1 IRREGULAR 0.064 Concrete 6.0 6.0 None 0 8.7 8.9 None 22.9 29.1 None 25.2 26.5 None DTCH10280 A4 2.5 1.5 1 PARABOLIC 0.255 Concrete 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None DTCH10285 A4 1.5 3 1 PARABOLIC 0.248 Concrete 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12347 A4 ZPIP12487 2 0 1 CIRCULAR 0.060 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12413 A4 ZPIP12568 1.5 0 1 CIRCULAR 0.042 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12418 A4 ZPIP10149 1.5 0 1 CIRCULAR 0.055 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12419 A4 ZPIP12576 1.5 0 1 CIRCULAR 0.046 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12426 A4 ZPIP10151 1.5 0 1 CIRCULAR 0.130 RCP 0.0 0.0 None 0 0.0 0.0 None 0.1 0.0 None 0.1 0.0 None PIPE12427 A4 ZPIP10152 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12460 A4 ZPIP12867 2 0 1 CIRCULAR 0.029 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12462 A4 ZPIP12869 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12469 A4 ZPIP16783 2 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12478 A4 ZPIP10307 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12479 A4 ZPIP10308 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12483 A4 ZPIP16788 2.5 0 1 CIRCULAR 0.034 CIPCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12487 A4 ZPIP10311 2 0 1 CIRCULAR 0.422 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12498 A4 ZPIP12902 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12499 A4 ZPIP12903 2 0 1 CIRCULAR 0.070 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12501 A4 ZPIP16794 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12519 A4 ZPIP16804 1.5 0 1 CIRCULAR 0.268 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12528 A4 ZPIP16811 3 0 1 CIRCULAR 0.029 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12532 A4 ZPIP13004 2 0 1 CIRCULAR 0.012 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12533 A4 ZPIP13005 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12534 A4 ZPIP13006 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.1 None PIPE12535 A4 ZPIP10370 1.5 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12537 A4 ZPIP10372 2 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12538 A4 ZPIP13008 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12539 A4 ZPIP13009 2 0 1 CIRCULAR 0.053 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12543 A4 ZPIP16839 1.5 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12544 A4 TESTGBA 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12551 A4 ZPIP13020 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12554 A4 ZPIP19001 4 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 60 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE12587 A4 ZPIP13099 2 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.1 None PIPE12588 A4 ZPIP13100 1.5 0 1 CIRCULAR 0.125 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12589 A4 ZPIP13101 1.5 0 1 CIRCULAR 0.104 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12592 A4 ZPIP16650 7 0 1 CIRCULAR 0.071 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12603 A4 ZPIP13110 2 0 1 CIRCULAR 0.062 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 Downstream 0.0 0.0 Downstream PIPE12604 A4 ZPIP16870 1.5 0 1 CIRCULAR 0.595 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12622 A4 ZPIP16876 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12633 A4 ZPIP10437 1.5 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12639 A4 ZPIP13151 3 0 1 CIRCULAR 0.177 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12641 A4 ZPIP13153 1.5 0 1 CIRCULAR 0.382 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12643 A4 ZPIP16889 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12655 A4 ZPIP10481 2 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 1.6 0.0 None 1.9 0.0 None PIPE12656 A4 ZPIP13215 2 0 1 CIRCULAR 0.013 Unknown 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12657 A4 ZPIP13216 2 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.9 0.0 None 0.9 0.0 None PIPE12663 A4 ZPIP10483 2.5 0 1 CIRCULAR 0.038 CIPCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12664 A4 ZPIP10484 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12668 A4 ZPIP13230 1.5 0 1 CIRCULAR 0.025 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12678 A4 ZPIP10493 2 0 1 CIRCULAR 0.057 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12701 A4 ZPIP13270 1.5 0 1 CIRCULAR 0.101 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12705 A4 ZPIP13271 1.5 0 1 CIRCULAR 0.003 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12714 A4 ZPIP13278 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12739 A4 ZPIP13310 2.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12740 A4 ZPIP13311 2 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12758 A4 ZPIP16914 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12759 A4 ZPIP16915 2 0 1 CIRCULAR 0.008 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12760 A4 ZPIP10544 2 0 1 CIRCULAR 0.035 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12761 A4 ZPIP10545 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12765 A4 ZPIP16916 2 0 1 CIRCULAR 0.162 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12766 A4 ZPIP16918 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12767 A4 ZPIP10555 2 0 1 CIRCULAR 0.060 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12775 A4 ZPIP13378 2 0 1 CIRCULAR 0.030 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12784 A4 ZPIP13408 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 77.7 0.0 None 11.8 0.0 None 8.7 0.0 None PIPE12791 A4 ZPIP13469 1.5 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12802 A4 ZPIP16956 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12805 A4 ZPIP13501 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12806 A4 ZPIP13502 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12808 A4 ZPIP13507 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12809 A4 ZPIP13508 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12810 A4 ZPIP13509 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12812 A4 ZPIP16958 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12813 A4 ZPIP16959 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12821 A4 ZPIP13535 1.5 0 1 CIRCULAR 0.031 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12853 A4 ZPIP17027 1.5 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12855 A4 ZPIP13774 1.5 0 1 CIRCULAR 0.028 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12856 A4 ZPIP13775 1.5 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12857 A4 ZPIP13776 1.5 0 1 CIRCULAR 0.029 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12858 A4 ZPIP13777 2.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12859 A4 ZPIP10779 1.5 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12860 A4 ZPIP13788 1.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12861 A4 ZPIP13789 1.5 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12862 A4 ZPIP13790 1.5 0 1 CIRCULAR 0.012 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12863 A4 ZPIP10782 1.5 0 1 CIRCULAR 0.029 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12864 A4 ZPIP16664 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12867 A4 ZPIP13792 2 0 1 CIRCULAR 0.089 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12869 A4 ZPIP17033 1.5 0 1 CIRCULAR 0.087 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12878 A4 ZPIP10792 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12879 A4 ZPIP13801 1.5 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12880 A4 ZPIP10794 6 0 1 CIRCULAR 0.403 RCP 2.7 2.7 None 0 4.4 4.4 None 6.5 6.5 None 7.4 7.4 None PIPE12909 A4 ZPIP13873 2 0 1 CIRCULAR 0.015 CMP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12915 A4 ZPIP10838 1.5 0 1 CIRCULAR 0.049 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12916 A4 ZPIP10839 1.5 0 1 CIRCULAR 0.087 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12917 A4 ZPIP13896 1.5 0 1 CIRCULAR 0.030 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12919 A4 ZPIP17059 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12924 A4 ZPIP11000 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.9 0.0 None 1.8 0.0 None 2.3 0.0 None PIPE12925 A4 ZPIP11001 1.5 0 1 CIRCULAR 0.050 RCP 0.0 0.0 None 0 0.0 0.0 None 0.2 0.0 None 0.6 0.0 None PIPE12926 A4 ZPIP11002 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.2 0.0 None 0.5 0.0 None 0.9 0.0 None PIPE12927 A4 ZPIP14216 2 0 1 CIRCULAR 0.006 RCP 0.1 0.0 None 0 1.6 0.0 None 3.2 0.0 None 3.9 0.0 None PIPE12934 A4 ZPIP14284 2 0 1 CIRCULAR 0.234 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 Downstream PIPE12947 A4 ZPIP11052 1.5 0 1 CIRCULAR 0.068 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12951 A4 ZPIP14323 1.5 0 1 CIRCULAR 0.053 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12953 A4 ZPIP14451 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12958 A4 ZPIP11121 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12959 A4 ZPIP14457 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12960 A4 ZPIP14459 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12964 A4 ZPIP11124 1.5 0 1 CIRCULAR 0.306 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12966 A4 ZPIP11126 2 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.9 0.0 None 7.4 0.1 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 61 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE12975 A4 ZPIP14471 1.5 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12977 A4 ZPIP17186 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12982 A4 ZPIP14479 1.5 0 1 CIRCULAR 0.255 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12988 A4 ZPIP14740 1.5 0 1 CIRCULAR 0.060 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE12991 A4 ZPIP11275 2 0 1 CIRCULAR 0.422 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13002 A4 ZPIP11281 1.5 0 1 CIRCULAR 0.093 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13008 A4 ZPIP17246 1.5 0 1 CIRCULAR 0.555 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13011 A4 ZPIP14756 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 21.6 0.0 None PIPE13032 A4 ZPIP17293 4 0 1 CIRCULAR 0.019 RCP 0.1 0.1 None 0 0.3 0.3 None 0.4 0.4 None 0.5 0.9 None PIPE13033 A4 ZPIP17294 4 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.1 0.1 None 0.1 0.1 None 0.1 0.2 None PIPE13047 A4 ZPIP11407 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13050 A4 ZPIP17304 1.5 0 1 CIRCULAR 0.123 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13052 A4 ZPIP11418 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13073 A4 ZPIP15171 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13075 A4 ZPIP15173 1.5 0 1 CIRCULAR 0.166 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13094 A4 ZPIP11540 1.5 0 1 CIRCULAR 0.566 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13095 A4 ZPIP15230 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13096 A4 ZPIP15231 1.5 0 1 CIRCULAR 0.127 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13102 A4 ZPIP11551 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13105 A4 ZPIP15259 1.5 0 1 CIRCULAR 0.038 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13108 A4 ZPIP17402 3 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13109 A4 ZPIP11556 3 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13110 A4 ZPIP11557 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13111 A4 ZPIP15267 3 0 1 CIRCULAR 0.001 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13112 A4 ZPIP11558 1.5 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13113 A4 ZPIP11559 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13114 A4 ZPIP11560 1.5 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13117 A4 ZPIP17405 1.5 0 1 CIRCULAR 0.025 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13124 A4 ZPIP17406 1.5 0 1 CIRCULAR 0.234 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13138 A4 ZPIP11582 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13144 A4 ZPIP11583 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13172 A4 ZPIP17475 1.5 0 1 CIRCULAR 0.036 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13184 A4 ZPIP11699 1.5 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13189 A4 ZPIP15545 1.5 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13190 A4 ZPIP15547 1.5 0 1 CIRCULAR 0.046 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13204 A4 ZPIP15581 1.5 0 1 CIRCULAR 0.010 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13213 A4 ZPIP11728 1 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13244 A4 ZPIP15654 1.5 0 1 CIRCULAR 0.120 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13256 A4 ZPIP11762 1.5 0 1 CIRCULAR 0.390 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13272 A4 ZPIP15675 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13277 A4 ZPIP15681 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13282 A4 ZPIP11791 1.5 0 1 CIRCULAR 0.010 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13285 A4 ZPIP15723 1.5 0 1 CIRCULAR 0.010 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13287 A4 ZPIP17531 1.5 0 1 CIRCULAR 0.010 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13288 A4 ZPIP17532 1.5 0 1 CIRCULAR 0.024 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13289 A4 ZPIP17533 1.5 0 1 CIRCULAR 0.070 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13290 A4 ZPIP17534 1.5 0 1 CIRCULAR 0.014 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13291 A4 ZPIP11794 1.5 0 1 CIRCULAR 0.005 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13296 A4 ZPIP15730 1.5 0 1 CIRCULAR 0.043 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13297 A4 ZPIP15731 1.5 0 1 CIRCULAR 0.025 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13308 A4 ZPIP15747 1.5 0 1 CIRCULAR 0.103 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13317 A4 ZPIP15759 2 0 1 CIRCULAR 0.066 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13327 A4 ZPIP11878 4 0 1 CIRCULAR 0.206 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13331 A4 ZPIP15891 2 0 1 CIRCULAR 0.087 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13332 A4 ZPIP17591 1.5 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13344 A4 ZPIP15953 2.25 0 1 CIRCULAR 0.084 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13346 A4 ZPIP17608 1.5 0 1 CIRCULAR 0.048 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13348 A4 ZPIP11913 1.5 0 1 CIRCULAR 0.120 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13356 A4 ZPIP11916 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13358 A4 ZPIP15966 1.5 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13359 A4 ZPIP15967 1.5 0 1 CIRCULAR 0.465 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13370 A4 ZPIP15986 1.5 0 1 CIRCULAR 0.067 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13384 A4 ZPIP11950 2 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13387 A4 ZPIP16041 1.5 0 1 CIRCULAR 0.255 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13394 A4 ZPIP17638 1.5 0 1 CIRCULAR 0.364 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13398 A4 ZPIP11968 1.5 0 1 CIRCULAR 0.370 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13399 A4 ZPIP16071 1.5 0 1 CIRCULAR 0.156 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13400 A4 ZPIP16072 1.5 0 1 CIRCULAR 0.070 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13402 A4 ZPIP16074 1.5 0 1 CIRCULAR 0.104 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13403 A4 ZPIP16075 3 0 1 CIRCULAR 0.025 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13404 A4 ZPIP16076 2 0 1 CIRCULAR 0.247 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13408 A4 ZPIP16078 2 0 1 CIRCULAR 0.174 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13409 A4 ZPIP16088 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13410 A4 ZPIP16089 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13411 A4 ZPIP11977 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13415 A4 ZPIP11980 2 0 1 CIRCULAR 0.132 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 62 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
CULV10226 A4 ZCUL16737 4.833 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13431 A4 ZPIP17812 0 0 1 DUMMY 0.151 RCP 4.8 4.9 None 0 8.4 8.4 None 12.6 12.7 None 14.4 14.4 None PIPE13432 A4 ZPIP16463 0 0 1 DUMMY 0.040 RCP 16.6 18.5 None 0 187.8 31.8 None 549.6 78.4 None 667.6 91.7 None PIPE13433 A4 ZPIP17821 0 0 1 DUMMY 0.101 RCP 11.6 11.7 None 0 21.9 22.1 None 34.1 34.2 None 39.0 39.1 None PIPE13434 A4 ZPIP12190 0 0 1 DUMMY 0.156 RCP 4.5 4.5 None 0 7.7 7.8 None 11.6 11.6 None 13.2 13.3 None PIPE13435 A4 ZPIP12213 0 0 1 DUMMY 0.075 RCP 100.4 101.7 None 0 169.8 172.2 None 253.2 249.3 None 286.2 277.6 None PIPE13436 A4 ZPIP12214 0 0 1 DUMMY 0.052 RCP 202.8 326.2 None 0 442.1 453.5 None 629.8 615.5 None 727.9 655.0 None PIPE13437 A4 ZPIP17850 0 0 1 DUMMY 0.035 RCP 13.8 13.9 None 0 24.2 24.4 None 36.0 37.4 Downstream 40.6 42.6 Downstream PIPE13444 A4 ZPIP17865 2 0 1 CIRCULAR 0.060 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13450 A4 ZPIP16562 1.5 0 1 CIRCULAR 1.965 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13451 A4 ZPIP16563 1.5 0 1 CIRCULAR 0.214 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13452 A4 ZPIP12251 0 0 1 DUMMY 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13453 A4 ZPIP12252 0 0 1 DUMMY 0.046 RCP 167.5 200.0 None 0 247.3 332.0 None 264.8 643.3 None 271.6 486.7 None PIPE13465 A4 ZPIP12269 1.5 0 1 CIRCULAR 0.482 CMP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13466 A4 ZPIP12270 0 0 1 DUMMY 0.027 RCP 1.1 0.0 None 0 1.3 0.0 None 1.9 0.0 None 2.4 0.0 None PIPE13467 A4 PIP16671 2 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13475 A4 PIP19081 4 10 1 TRAPEZOIDAL 0.020 RCP 3.6 3.6 None 0 5.7 5.7 None 8.3 8.3 None 9.4 9.4 None PIPE13476 A4 PIP19082 0 0 1 DUMMY 0.020 RCP 3.5 3.6 None 0 5.5 5.7 None 8.1 8.3 None 9.2 9.4 None PIPE13503 A4 PIP10322 1.5 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13504 A4 PIP10327 1.5 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13505 A4 PIP10328 2 0 1 CIRCULAR 0.072 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13506 A4 PIP10425 2 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13507 A4 PIP10426 2 0 1 CIRCULAR 0.363 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13513 A4 2 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13514 A4 2 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13515 A4 2 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13523 A4 1.5 0 1 CIRCULAR 0.051 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13524 A4 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13525 A4 1.5 0 1 CIRCULAR 0.032 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13526 A4 2 0 1 CIRCULAR 0.284 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13527 A4 2 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13536 A4 1.5 0 1 CIRCULAR 0.217 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10023 A4 0 0 1 DUMMY 0.006 RCP 54.0 56.0 None 0 86.4 89.8 None 128.1 127.9 None 143.6 144.5 None PIPE13541 A4 ZPIP17848 1.5 0 1 CIRCULAR 0.234 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13542 A4 ZPIP11555 1.5 0 1 CIRCULAR 0.013 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13543 A4 ZPIP15263 3 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13544 A4 ZPIP15264 3 0 1 CIRCULAR 0.008 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13545 A4 ZPIP15266 3 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13546 A4 ZPIP12177 0 0 1 DUMMY 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10024 A4 0 0 1 DUMMY 0.017 RCP 68.2 4.9 Downstream 0 123.5 7.8 Downstream 92.1 11.2 Downstream 67.1 12.6 Downstream FLOW10025 A4 0 0 1 DUMMY 0.040 RCP 107.3 196.2 Downstream 0 189.1 343.9 Downstream 218.9 444.5 Downstream 191.0 469.7 Downstream FLOW10026 A4 0 0 1 DUMMY 0.005 RCP 15.1 21.3 None 0 33.8 41.8 None 56.7 67.4 None 66.0 76.9 None FLOW10027 A4 0 0 1 DUMMY 0.069 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10028 A4 0 0 1 DUMMY 0.012 RCP 103.3 103.4 None 0 200.4 203.2 Downstream 334.1 217.2 Downstream 383.4 222.0 Downstream FLOW10029 A4 0 0 1 DUMMY 0.019 RCP 369.5 253.4 None 0 647.0 325.2 None 805.5 442.0 None 963.7 471.7 None FLOW10030 A4 0 0 1 IRREGULAR 0.037 RCP 6.9 8.5 Downstream 0 11.4 13.1 Downstream 17.2 16.5 Downstream 19.7 18.2 Downstream FLOW10031 A4 0 0 1 DUMMY 0.121 RCP 23.0 23.2 None 0 40.1 41.2 None 62.2 63.1 Downstream 72.1 72.4 Downstream PIPE13549 A4 ZPIP10534 2 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13551 A4 PIP10401 4 0 1 CIRCULAR 0.013 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13552 A4 PIP10385 4 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13553 A4 PIP10373 1.5 0 1 CIRCULAR 0.073 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13554 A4 PIP10383 1.5 0 1 CIRCULAR 0.102 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10032 A4 0 0 1 DUMMY 0.057 RCP 216.3 219.9 None 0 402.9 402.6 None 619.4 646.3 None 712.5 843.6 None FLOW10033 A4 0 0 1 DUMMY 0.020 RCP 97.4 98.4 Downstream 0 191.2 205.9 Downstream 306.2 317.1 Downstream 364.4 377.6 Downstream FLOW10034 A4 0 0 1 DUMMY 0.034 RCP 1.3 1.4 None 0 2.2 2.3 None 3.3 3.5 None 301.2 3.9 None PIPE13558 A4 ZPIP14739 2 0 1 CIRCULAR 0.363 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13559 A4 ZPIP14761 1.5 0 1 CIRCULAR 0.132 CMP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10035 A4 0 0 1 DUMMY 0.026 RCP 232.1 124.4 Downstream 0 253.9 171.2 Downstream 259.0 211.2 Downstream 234.1 221.6 Downstream FLOW10036 A4 0 0 1 DUMMY 0.004 RCP 314.9 284.5 None 0 467.0 395.2 None 573.5 503.2 None 625.5 542.3 None FLOW10037 A4 0 0 1 DUMMY 0.009 RCP 316.1 285.5 None 0 469.9 397.9 None 577.1 505.9 None 629.7 545.2 None PIPE13580 A4 ZPIP17851 0 0 1 DUMMY 0.066 RCP 7.2 7.2 None 0 11.9 11.9 None 17.6 17.9 None 20.0 20.4 None PIPE13581 A4 ZPIP11118 1.5 0 1 CIRCULAR 0.134 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10038 A4 0 0 1 DUMMY 0.085 RCP 19.5 16.7 None 0 38.5 40.1 None 59.3 58.6 None 65.5 65.7 None PIPE13593 A4 0 0 1 DUMMY 0.098 RCP 39.6 40.1 None 0 69.9 70.5 None 105.8 105.9 None 121.4 121.6 None PIPE13594 A4 0 0 1 DUMMY 0.001 RCP 13.2 15.4 None 0 21.3 25.4 None 31.4 36.6 None 35.7 40.1 None PIPE13595 A4 0 0 1 DUMMY 0.005 RCP 168.7 171.5 None 0 298.7 296.1 None 454.2 387.0 None 521.2 402.2 None PIPE13597 A4 0 0 1 DUMMY 0.035 RCP 25.1 25.7 None 0 36.8 40.0 Downstream 58.7 56.8 Downstream 75.6 63.9 Downstream PIPE13601 A4 ZPIP16746 1.5 0 1 CIRCULAR 0.089 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10041 A4 0 0 1 DUMMY 0.093 RCP 14.5 14.7 None 0 23.4 23.6 None 34.7 34.8 None 39.3 39.2 None CHAN10328 A4 ZCH10145 0 0 1 IRREGULAR 0.043 EARTHEN 22.2 7.9 None 0 34.0 9.0 None 46.2 16.1 None 51.3 16.3 None CHAN10329 A4 ZCH10145 0 0 1 IRREGULAR 0.010 EARTHEN 21.3 7.9 None 0 33.9 9.0 None 46.2 13.9 None 51.2 14.6 None CHAN10330 A4 ZCH10145 0 0 1 IRREGULAR 0.043 EARTHEN 21.1 7.9 None 0 33.7 9.0 None 45.9 13.7 None 51.1 14.4 None CHAN10331 A4 ZCH10051 0 0 1 IRREGULAR 0.014 EARTHEN 22.2 8.2 None 0 34.3 9.9 None 46.5 12.0 None 51.8 13.9 None CHAN10332 A4 ZCH10051 0 0 1 IRREGULAR 0.014 EARTHEN 22.2 8.0 None 0 34.3 9.3 None 46.3 15.7 None 51.5 16.4 None CHAN10333 A4 ZCH10097 0 0 1 IRREGULAR 0.014 EARTHEN 21.4 7.4 None 0 32.9 7.8 None 45.2 8.1 None 50.5 8.2 None CHAN10334 A4 ZCH10097 0 0 1 IRREGULAR 0.014 EARTHEN 21.1 7.3 None 0 32.8 7.7 None 45.1 8.1 None 50.1 8.2 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 63 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
CHAN10335 A4 ZCH10098 0 0 1 IRREGULAR 0.014 EARTHEN 21.5 8.2 None 0 33.1 9.4 None 45.8 10.7 None 50.9 11.1 None CHAN10336 A4 ZCH10098 0 0 1 IRREGULAR 0.014 EARTHEN 21.5 7.8 None 0 33.0 8.5 None 45.4 9.0 None 50.7 9.2 None CHAN10337 A4 ZCH10013 0 0 1 IRREGULAR 0.014 EARTHEN 20.7 8.7 None 0 32.5 10.5 None 45.0 12.6 None 49.8 13.5 None CHAN10338 A4 ZCH10013 0 0 1 IRREGULAR 0.014 EARTHEN 20.6 7.8 None 0 32.3 8.7 None 44.7 9.8 None 49.6 10.2 None CHAN10339 A4 ZCH10014 0 0 1 IRREGULAR 0.014 EARTHEN 18.5 8.1 None 0 29.3 9.6 None 41.1 10.8 None 46.0 11.4 None CHAN10340 A4 ZCH10014 0 0 1 IRREGULAR 0.014 EARTHEN 18.3 7.4 None 0 29.7 8.0 None 41.4 8.1 None 45.9 8.2 None CHAN10341 A4 ZCH10052 0 0 1 IRREGULAR 0.014 EARTHEN 17.6 7.5 None 0 28.3 8.8 None 39.4 10.2 None 44.1 10.8 None CHAN10342 A4 ZCH10052 0 0 1 IRREGULAR 0.014 EARTHEN 17.6 7.4 None 0 28.1 7.9 None 39.3 8.7 None 44.0 9.1 None CHAN10343 A4 ZCH10128 0 0 1 IRREGULAR 0.014 EARTHEN 16.5 7.8 None 0 25.8 9.2 None 37.4 10.7 None 42.2 11.4 None CHAN10344 A4 ZCH10128 0 0 1 IRREGULAR 0.014 EARTHEN 16.1 7.1 None 0 25.7 7.9 None 36.5 8.7 None 41.1 9.2 None CHAN10345 A4 ZCH10021 0 0 1 IRREGULAR 0.014 EARTHEN 1.5 2.3 None 0 4.2 5.6 None 4.8 8.9 None 5.1 10.4 Upstream CHAN10346 A4 ZCH10021 0 0 1 IRREGULAR 0.014 EARTHEN 4.5 7.9 None 0 7.9 16.8 None 9.3 27.2 None 10.8 31.8 Downstream CHAN10347 A4 ZCH10071 0 0 1 IRREGULAR 0.011 EARTHEN 45.1 32.0 None 0 75.8 51.0 None 108.3 74.7 Upstream 108.8 95.2 Upstream CHAN10348 A4 ZCH10071 0 0 1 IRREGULAR 0.011 EARTHEN 50.2 36.8 None 0 84.2 58.8 Downstream 125.9 85.6 Downstream 127.1 108.8 Downstream CHAN10349 A4 ZCH10015 0 0 1 IRREGULAR 0.006 Concrete 1.4 1.5 None 0 1.8 2.4 None 2.7 3.6 None 3.1 4.1 None CHAN10350 A4 ZCH10015 0 0 1 IRREGULAR 0.004 Concrete 1.2 1.1 None 0 2.7 1.5 None 4.0 2.4 None 4.3 2.8 None CHAN10351 A4 ZCH10129 0 0 1 IRREGULAR 0.002 Concrete 36.1 30.2 None 0 59.1 46.5 None 95.7 99.3 None 102.8 103.3 None CHAN10352 A4 ZCH10129 0 0 1 IRREGULAR 0.035 Concrete 36.1 30.7 None 0 60.1 47.2 None 104.7 127.2 None 114.7 129.5 None CHAN10353 A4 ZCH10107 0 0 1 IRREGULAR 0.015 Concrete 41.5 29.3 None 0 67.0 45.6 None 95.6 67.0 None 108.3 73.1 None CHAN10354 A4 ZCH10107 0 0 1 IRREGULAR 0.015 Concrete 41.5 29.2 None 0 67.0 45.6 None 95.7 66.7 None 108.2 73.0 None DTCH10286 A4 DD032A 0 0 1 IRREGULAR 0.088 Earthen 318.3 284.5 None 0 480.5 395.0 None 583.1 502.9 Upstream 633.7 542.1 Upstream DTCH10287 A4 DD032A 0 0 1 IRREGULAR 0.011 Earthen 317.7 284.4 None 0 475.9 394.7 None 579.4 502.6 None 630.0 541.8 None DTCH10301 A4 DD032C 0 0 1 IRREGULAR 0.026 Earthen 316.8 283.0 None 0 481.8 392.6 None 582.7 500.7 Downstream 632.5 539.8 Downstream CHAN10360 A4 0 0 1 IRREGULAR 0.019 Earthen 315.2 313.8 None 0 591.8 584.8 None 920.0 914.9 Upstream 1066.3 1056.7 Upstream CHAN10361 A4 0 0 1 IRREGULAR 0.028 Earthen 315.2 313.8 None 0 591.8 584.8 None 919.7 914.7 None 1065.8 1055.4 None CHAN10362 A4 0 0 1 IRREGULAR 0.038 Earthen 315.4 314.0 None 0 592.1 585.1 None 921.0 916.1 None 1067.1 1056.0 None CHAN10363 A4 0 0 1 IRREGULAR 0.043 Earthen 315.4 313.9 None 0 592.1 585.1 None 920.8 916.0 None 1066.7 1054.6 None CHAN10365 A4 0 0 1 IRREGULAR 0.025 Earthen 331.1 329.9 None 0 636.7 646.6 None 1009.6 1031.8 None 1169.3 1164.9 None CHAN10366 A4 0 0 1 IRREGULAR 0.015 Earthen 331.2 329.9 None 0 636.7 646.1 None 1008.0 1029.6 None 1168.8 1164.8 None CHAN10367 A4 0 0 1 IRREGULAR 0.027 Earthen 330.5 329.2 None 0 627.0 633.9 None 1003.9 1024.2 None 1163.9 1162.2 None CHAN10368 A4 0 0 1 IRREGULAR 0.018 Earthen 331.1 329.8 None 0 626.8 632.8 None 1006.0 1026.3 None 1166.9 1165.1 None CHAN10369 A4 0 0 1 IRREGULAR 0.021 Earthen 331.1 329.8 None 0 626.0 631.6 None 1006.2 1026.6 None 1167.5 1164.8 None CHAN10370 A4 0 0 1 IRREGULAR 0.018 Earthen 314.2 312.8 None 0 589.5 582.5 None 917.1 910.5 None 1062.9 1057.1 None CHAN10371 A4 0 0 1 IRREGULAR 0.028 Earthen 313.9 312.5 None 0 589.4 582.4 None 914.2 908.5 Downstream 1059.5 1051.7 Downstream CHAN10376 A4 0 0 1 IRREGULAR 0.069 Earthen 331.4 330.1 None 0 627.3 632.7 None 1007.1 1027.1 Upstream 1167.5 1165.0 Upstream CHAN10377 A4 0 0 1 IRREGULAR 0.071 Earthen 331.4 330.0 None 0 627.1 632.4 Downstream 1006.3 1026.0 Downstream 1166.5 1058.3 Downstream CHAN10379 A4 0 0 1 IRREGULAR 0.020 Earthen 330.1 342.2 Downstream 0 634.0 514.0 Downstream 988.7 723.9 Downstream 1305.2 749.3 Downstream CHAN10380 A4 0 0 1 IRREGULAR 0.021 Earthen 330.9 355.8 Upstream 0 642.1 459.5 Upstream 989.0 590.2 Upstream 1445.6 687.2 Upstream CHAN10381 A4 0 0 1 IRREGULAR 0.296 Earthen 330.9 320.2 Downstream 0 605.7 377.6 Downstream 859.0 602.1 Downstream 1662.7 665.5 Downstream CHAN10382 A4 0 0 1 IRREGULAR 0.040 Earthen 330.3 283.8 Upstream 0 597.2 333.1 Upstream 786.3 607.4 Upstream 1735.4 653.2 Upstream CHAN10383 A4 0 0 1 IRREGULAR 0.039 Earthen 328.5 228.5 None 0 585.8 281.4 Downstream 731.8 594.9 Downstream 1778.5 614.0 Downstream CHAN10384 A4 0 0 1 IRREGULAR 0.032 Earthen 315.5 314.1 None 0 592.5 585.5 None 921.8 917.2 None 1067.9 1055.5 None CHAN10385 A4 0 0 1 IRREGULAR 0.042 Earthen 315.5 314.1 None 0 592.5 585.5 None 921.9 917.6 None 1068.2 1055.7 None DTCH10316 A4 0 0 1 IRREGULAR 0.468 Concrete 146.8 147.3 None 0 292.3 231.5 Downstream 460.6 266.1 Downstream 530.4 279.0 Downstream DTCH10317 A4 0 0 1 IRREGULAR 0.237 Concrete 16.5 16.5 None 0 35.8 35.8 None 56.9 56.9 None 65.9 65.9 None DTCH10318 A4 0 0 1 IRREGULAR 0.102 Concrete 16.2 16.2 None 0 35.3 35.3 None 56.1 56.1 None 65.0 65.0 None DTCH10321 A4 0 0 1 IRREGULAR 0.103 Concrete 15.0 15.0 None 0 34.4 34.3 None 54.3 54.6 None 62.9 62.9 None DTCH10322 A4 0 0 1 IRREGULAR 0.232 Concrete 15.0 15.0 None 0 34.1 34.1 None 54.0 54.4 None 62.5 62.7 None DTCH10323 A4 0 0 1 IRREGULAR 0.429 Concrete 1.9 1.9 None 0 3.3 3.3 None 4.9 4.9 None 5.6 5.6 None DTCH10324 A4 0 0 1 IRREGULAR 0.153 Concrete 1.9 1.9 None 0 3.2 3.2 None 4.8 4.8 None 5.5 5.5 None DTCH10325 A4 0 0 1 IRREGULAR 0.153 Concrete 1.8 1.8 None 0 3.1 3.1 None 4.7 4.7 None 5.3 5.3 None DTCH10326 A4 0 0 1 IRREGULAR 0.153 Concrete 1.8 1.8 None 0 3.0 3.0 None 4.6 4.6 None 5.2 5.2 None DTCH10327 A4 0 0 1 IRREGULAR 0.153 Concrete 1.7 1.7 None 0 3.0 3.0 None 4.5 4.5 None 5.2 5.2 None DTCH10328 A4 0 0 1 IRREGULAR 0.153 Concrete 1.7 1.7 None 0 2.9 2.9 None 4.4 4.4 None 5.1 5.1 None DTCH10329 A4 0 0 1 IRREGULAR 0.429 Concrete 1.4 1.4 None 0 2.8 2.8 None 4.3 4.3 None 4.9 4.9 None CHAN10389 A4 CH033B 0 0 1 IRREGULAR 0.008 Earthen 392.8 285.0 None 0 643.5 399.0 None 781.1 520.4 None 2662.6 567.9 None CHAN10390 A4 CH033B 0 0 1 IRREGULAR 0.031 Earthen 392.8 285.0 None 0 643.4 399.0 None 781.0 520.2 None 2634.9 567.6 None DTCH10330 A4 CH033B 0 0 1 IRREGULAR 0.043 Earthen 396.4 332.1 None 0 649.0 413.7 None 782.0 558.8 None 2580.0 614.1 None DTCH10331 A4 CH033B 0 0 1 IRREGULAR 0.021 Earthen 396.3 288.6 None 0 649.0 413.7 None 772.2 561.4 None 2539.2 605.6 None DTCH10332 A4 CH033B 0 0 1 IRREGULAR 0.013 Earthen 396.2 287.7 None 0 649.0 415.5 Downstream 754.6 589.4 Downstream 2449.7 635.2 Downstream DTCH10333 A4 CH033B 0 0 1 IRREGULAR 0.052 Earthen 393.8 286.7 None 0 645.1 403.4 None 783.1 533.6 None 2630.9 583.4 None DTCH10334 A4 CH033B 0 0 1 IRREGULAR 0.027 Earthen 393.8 287.3 None 0 645.1 403.4 None 783.1 533.6 None 2626.4 583.4 Downstream DTCH10335 A4 CH033B 0 0 1 IRREGULAR 0.038 Earthen 395.9 306.3 None 0 648.4 412.2 None 787.2 555.6 None 2634.3 610.3 Upstream DTCH10337 A4 CH033B 0 0 1 IRREGULAR 0.027 Earthen 395.9 384.8 None 0 648.4 412.2 None 785.4 555.5 None 2593.2 610.3 None CHAN10391 A4 0 0 1 IRREGULAR 0.121 Concrete 1.1 1.1 None 0 1.7 1.7 None 2.4 2.5 None 2.8 2.8 None CHAN10392 A4 0 0 1 IRREGULAR 0.020 Earthen 0.9 0.9 None 0 1.7 1.7 None 2.2 2.1 None 2.4 2.4 None CHAN10393 A4 0 0 1 IRREGULAR 0.014 Concrete 15.3 15.2 None 0 24.3 21.4 Upstream 36.3 20.8 Upstream 64.5 21.5 Upstream CHAN10394 A4 0 0 1 IRREGULAR 0.009 Concrete 56.4 55.9 Downstream 0 89.6 80.0 Downstream 122.5 78.5 Downstream 227.7 82.2 Downstream DTCH10343 A4 0 0 1 IRREGULAR 0.301 Concrete 21.2 21.3 None 0 38.5 38.6 None 58.6 58.4 None 67.0 66.8 None DTCH10344 A4 0 0 1 IRREGULAR 0.053 Concrete 21.6 21.7 None 0 38.2 38.3 None 58.2 58.1 None 66.7 66.4 None DTCH10345 A4 0 0 1 IRREGULAR 0.054 Concrete 20.7 20.7 None 0 37.6 37.6 None 57.2 57.1 None 65.7 65.5 None DTCH10346 A4 0 0 1 IRREGULAR 0.053 Concrete 20.6 20.4 None 0 36.0 36.8 None 56.3 56.5 None 65.0 64.8 None DTCH10357 A4 0 0 1 IRREGULAR 0.885 Earthen 14.2 14.2 None 0 22.5 22.6 None 32.9 33.0 None 37.3 37.3 None DTCH10359 A4 0 0 1 IRREGULAR 0.138 Earthen 13.1 13.1 None 0 21.2 21.2 None 31.3 31.4 None 35.5 35.6 None DTCH10369 A4 0 0 1 IRREGULAR 0.088 Earthen 75.9 75.8 None 0 155.2 155.4 None 244.3 244.8 None 282.3 283.1 None DTCH10370 A4 0 0 1 IRREGULAR 0.099 Earthen 75.9 75.8 None 0 155.1 155.3 None 244.1 244.5 None 282.0 282.7 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 64 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
CHAN10399 A4 0 0 1 IRREGULAR 0.101 Earthen 311.6 310.2 None 0 584.9 577.8 None 903.9 894.9 None 1050.9 1052.5 None CHAN10401 A4 0 0 1 IRREGULAR 0.042 Earthen 313.9 312.5 None 0 589.2 582.2 None 916.7 909.5 None 1062.6 1057.5 None CHAN10402 A4 CH033C 0 0 1 IRREGULAR 0.015 Earthen 357.5 259.2 None 0 651.9 335.8 None 834.2 451.5 None 956.5 483.9 None CHAN10403 A4 CH033C 0 0 1 IRREGULAR 0.015 Earthen 357.3 259.2 None 0 651.8 335.8 None 824.8 451.5 None 1225.4 483.9 None CHAN10404 A4 CH033C 0 0 1 IRREGULAR 0.015 Earthen 357.0 259.2 None 0 651.6 335.8 None 798.8 451.5 None 1720.5 483.2 None CHAN10405 A4 CH033C 0 0 1 IRREGULAR 0.015 Earthen 360.7 258.7 None 0 622.3 335.8 None 747.6 449.2 None 2466.7 482.4 None CHAN10411 A4 0 0 1 IRREGULAR 0.023 Concrete 394.3 284.4 None 0 643.0 394.7 None 778.8 526.0 None 3021.3 574.6 None CHAN10412 A4 0 0 1 IRREGULAR 0.010 Concrete 394.2 284.4 None 0 642.9 394.7 None 778.8 520.5 None 2929.7 572.2 None CHAN10413 A4 0 0 1 IRREGULAR 0.025 Concrete 394.1 284.4 None 0 642.9 394.7 None 778.7 519.3 Downstream 2784.0 570.8 Downstream CHAN10414 A4 0 0 1 IRREGULAR 0.005 Concrete 9.8 9.3 None 0 17.7 16.8 None 26.9 22.7 None 30.8 25.4 None CHAN10415 A4 0 0 1 IRREGULAR 0.002 Concrete 7.4 5.6 None 0 13.3 14.0 None 21.4 22.0 None 25.4 24.8 None CHAN10416 A4 0 0 1 IRREGULAR 0.005 Concrete 7.1 5.6 None 0 13.8 14.3 None 22.5 23.9 None 26.4 27.0 None CHAN10417 A4 0 0 1 IRREGULAR 0.035 Concrete 12.4 10.0 None 0 23.8 25.6 None 39.3 40.1 None 46.9 45.6 None CHAN10418 A4 0 0 1 IRREGULAR 0.006 Concrete 12.3 10.0 None 0 23.6 25.1 None 38.1 39.1 None 46.1 45.1 None CHAN10419 A4 0 0 1 IRREGULAR 0.035 Concrete 12.1 9.9 None 0 23.4 24.7 None 37.6 38.6 None 45.4 44.6 None CHAN10420 A4 0 0 1 IRREGULAR 0.118 Concrete 13.9 11.5 None 0 26.9 28.3 None 43.1 44.5 None 52.2 51.4 None CHAN10421 A4 0 0 1 IRREGULAR 0.011 Concrete 13.8 11.5 None 0 26.8 28.1 None 42.9 50.3 None 51.8 57.4 None CHAN10422 A4 0 0 1 IRREGULAR 0.118 Concrete 13.7 11.5 None 0 26.7 28.0 None 42.8 41.1 None 51.5 43.6 None CHAN10426 A4 ZCH10063A 0 0 1 IRREGULAR 0.002 Concrete 22.4 18.7 None 0 37.7 27.1 None 53.9 34.8 None 60.0 38.2 None DTCH10412 A4 0 0 1 IRREGULAR 0.097 Earthen 11.9 12.1 None 0 19.3 19.5 None 29.0 29.2 None 32.9 33.1 None DTCH10413 A4 0 0 1 IRREGULAR 0.102 Earthen 11.8 11.9 None 0 19.1 19.3 None 28.8 29.0 None 32.7 32.8 None DTCH10414 A4 0 0 1 IRREGULAR 0.103 Earthen 11.8 11.9 None 0 19.0 19.1 None 28.6 28.8 None 32.5 32.6 None DTCH10415 A4 0 0 1 IRREGULAR 0.102 Earthen 11.6 11.7 None 0 18.8 18.9 None 28.3 28.5 None 32.2 32.3 None DTCH10416 A4 0 0 1 IRREGULAR 0.101 Earthen 10.4 10.5 None 0 16.8 16.9 None 24.1 24.2 None 28.0 28.1 None DTCH10417 A4 0 0 1 IRREGULAR 0.103 Earthen 10.4 10.5 None 0 16.8 16.9 None 24.0 24.2 None 27.9 28.1 None DTCH10418 A4 0 0 1 IRREGULAR 0.100 Earthen 10.3 10.4 None 0 16.8 16.8 None 24.0 24.1 None 27.9 28.0 None DTCH10419 A4 0 0 1 IRREGULAR 0.099 Earthen 10.3 10.3 None 0 16.6 16.7 None 23.8 23.9 None 27.7 27.8 None CHAN10427 A4 0 0 1 IRREGULAR 0.083 Concrete 52.2 52.3 None 0 95.1 95.3 None 152.8 180.0 None 176.4 202.5 None CHAN10429 A4 0 0 1 IRREGULAR 0.016 Concrete 44.9 44.9 None 0 84.6 84.7 None 134.6 134.0 None 157.0 155.9 None CHAN10430 A4 0 0 1 IRREGULAR 0.016 Concrete 47.3 47.3 None 0 88.5 88.6 None 137.1 136.4 None 158.8 157.5 None CHAN10431 A4 0 0 1 IRREGULAR 0.016 Concrete 46.6 46.6 None 0 87.1 87.1 None 134.6 133.9 None 154.0 152.6 None CHAN10432 A4 0 0 1 IRREGULAR 0.017 Concrete 42.0 42.0 None 0 78.3 78.2 None 124.9 124.7 None 145.2 144.4 None CHAN10433 A4 0 0 1 IRREGULAR 0.016 Concrete 40.4 40.3 None 0 76.4 76.3 None 122.9 122.7 None 142.4 141.6 None CHAN10436 A4 0 0 1 IRREGULAR 0.016 Concrete 36.3 36.3 None 0 68.7 68.7 None 117.2 117.1 None 136.0 135.5 None CHAN10437 A4 0 0 1 IRREGULAR 0.016 Concrete 33.6 33.6 None 0 62.7 62.6 None 108.5 108.4 None 128.2 127.9 None CHAN10438 A4 0 0 1 IRREGULAR 0.016 Concrete 31.0 31.0 None 0 59.2 59.2 None 100.3 100.3 None 118.1 117.9 None CHAN10440 A4 0 0 1 IRREGULAR 0.016 Concrete 29.1 29.1 None 0 53.9 53.9 None 90.6 90.6 None 107.3 107.1 None CHAN10441 A4 0 0 1 IRREGULAR 0.016 Concrete 29.3 29.3 None 0 54.2 54.1 None 91.3 91.2 None 107.0 106.9 None CHAN10442 A4 0 0 1 IRREGULAR 0.016 Concrete 29.1 29.1 None 0 53.9 53.9 None 86.1 86.1 None 103.0 102.8 None CHAN10447 A4 0 0 1 IRREGULAR 0.015 Concrete 35.7 35.7 None 0 67.4 67.4 None 111.0 111.0 None 126.7 126.6 None CHAN10448 A4 0 0 1 IRREGULAR 0.014 Concrete 34.4 34.4 None 0 65.9 65.9 None 109.1 109.1 None 124.4 124.3 None CHAN10449 A4 0 0 1 IRREGULAR 0.143 Concrete 35.2 35.4 None 0 63.7 60.7 None 97.9 76.9 None 112.2 83.1 None CHAN10450 A4 0 0 1 IRREGULAR 0.043 Concrete 35.8 35.8 None 0 64.0 62.0 None 99.9 77.2 None 114.1 83.5 None CHAN10451 A4 0 0 1 IRREGULAR 0.042 Concrete 32.7 32.7 None 0 60.7 58.9 None 95.9 77.5 None 110.3 83.6 None CHAN10452 A4 0 0 1 IRREGULAR 0.047 Concrete 30.5 30.5 None 0 57.9 56.8 None 92.4 76.5 None 106.5 82.9 None CHAN10453 A4 0 0 1 IRREGULAR 0.042 Concrete 26.0 26.0 None 0 52.4 51.7 None 84.3 74.3 None 98.3 81.0 None CHAN10454 A4 0 0 1 IRREGULAR 0.042 Concrete 34.0 33.8 None 0 47.3 46.8 None 77.3 72.0 None 90.8 79.1 None CHAN10455 A4 0 0 1 IRREGULAR 0.155 Concrete 28.1 27.8 None 0 47.2 46.8 None 77.2 71.9 None 90.7 79.1 None CHAN10461 A4 CH033A 0 0 1 IRREGULAR 0.007 Earthen 401.3 297.3 None 0 688.7 476.7 None 790.7 703.3 None 1792.7 735.5 None CHAN10462 A4 CH033A 0 0 1 IRREGULAR 0.007 Earthen 378.8 290.1 None 0 608.1 440.6 None 675.7 603.4 None 1380.6 630.7 None CHAN10463 A4 CH033A 0 0 1 IRREGULAR 0.015 Earthen 349.3 284.1 Downstream 0 588.8 392.0 Downstream 640.5 510.8 Downstream 1084.0 549.0 Downstream DTCH10420 A4 0 0 1 IRREGULAR 0.174 Earthen 56.1 56.3 None 0 89.3 89.6 None 141.6 142.3 None 170.0 170.7 None DTCH10422 A4 0 0 1 IRREGULAR 0.047 Earthen 56.0 56.2 None 0 89.2 89.5 None 143.4 144.1 None 171.9 172.6 None DTCH10423 A4 0 0 1 IRREGULAR 0.054 Earthen 55.9 56.1 None 0 89.1 89.3 None 141.0 141.6 None 169.4 170.1 None DTCH10424 A4 0 0 1 IRREGULAR 0.046 Earthen 55.8 56.0 None 0 88.9 89.1 None 139.7 140.3 None 167.3 168.0 None DTCH10425 A4 0 0 1 IRREGULAR 0.008 Concrete 49.1 49.2 None 0 81.1 80.5 None 126.0 125.5 None 149.2 148.2 None DTCH10426 A4 CH033C 0 0 1 IRREGULAR 0.170 Earthen 369.5 253.4 None 0 647.0 325.2 None 805.5 442.0 None 963.7 471.7 None DTCH10427 A4 CH033C 0 0 1 IRREGULAR 0.100 Earthen 369.4 253.4 None 0 647.0 325.2 None 805.5 442.0 None 963.6 471.7 None DTCH10428 A4 CH033C 0 0 1 IRREGULAR 0.075 Earthen 369.4 253.4 None 0 647.0 325.2 None 805.4 442.0 None 963.6 471.7 None DTCH10429 A4 CH033C 0 0 1 IRREGULAR 0.010 Earthen 366.4 253.2 None 0 644.8 325.1 None 804.5 441.9 None 955.1 471.6 None CHAN10464 A4 0 0 1 IRREGULAR 0.033 Earthen 365.1 261.6 None 0 678.5 360.5 None 872.8 631.6 Upstream 1874.9 716.7 Upstream CHAN10465 A4 0 0 1 IRREGULAR 0.013 Earthen 366.0 263.5 None 0 673.7 360.5 None 844.1 641.9 None 1825.2 708.5 None CHAN10470 A4 CH033C 0 0 1 IRREGULAR 0.057 Earthen 112.2 112.5 None 0 207.9 203.2 None 327.7 312.3 None 386.7 363.6 None CHAN10471 A4 CH033C 0 0 1 IRREGULAR 0.057 Earthen 112.0 112.3 None 0 207.3 202.7 None 326.8 311.6 None 385.6 362.7 None CHAN10472 A4 CH033C 0 0 1 IRREGULAR 0.118 Earthen 111.8 112.0 None 0 206.8 202.4 None 326.4 310.8 None 385.3 362.7 None CHAN10475 A4 ZCH10041 0 0 1 IRREGULAR 0.003 Concrete 23.6 17.9 None 0 39.6 24.4 None 58.5 29.8 None 66.5 31.8 None CHAN10476 A4 ZCH10041 0 0 1 IRREGULAR 0.002 Concrete 23.7 17.9 None 0 40.4 24.5 None 60.0 29.8 None 67.9 31.9 None FLOW10042 A4 0 0 1 DUMMY 0.006 RCP 8.6 9.2 None 0 13.7 14.5 None 20.3 21.3 None 23.0 24.0 None FLOW10043 A4 0 0 1 DUMMY 0.002 RCP 111.7 124.3 None 0 183.2 193.8 None 271.5 277.7 None 309.4 310.0 None DTCH10499 A4 CH033C 0 0 1 IRREGULAR 0.004 Earthen 354.7 257.1 None 0 647.2 332.5 None 819.1 448.4 None 949.2 480.1 None CHAN10789 A4 0 0 1 IRREGULAR 0.122 Earthen 0.7 0.7 None 0 0.8 0.9 None 1.4 1.5 None 1.7 1.8 None CHAN10477 A4 0 0 1 IRREGULAR 0.029 EARTHEN 0.0 7.3 None 0 0.0 22.7 None 0.0 37.2 None 42.8 42.8 None FLOW10089 A4 0 0 1 DUMMY -0.085 RCP 0.0 18.1 None 0 0.0 29.0 None 0.0 42.8 None 48.4 48.2 None PIPE13860 B ZPIP10189 1.5 0 1 CIRCULAR 0.086 RCP 31.7 31.8 None 1.03 76.1 75.6 Upstream 123.2 124.2 Upstream 145.0 146.6 Upstream PIPE13902 B ZPIP13392 4.5 0 1 CIRCULAR 0.002 RCP 147.6 135.6 None 1.67 296.7 230.8 None 487.4 285.8 None 567.0 305.8 None PIPE13789 B ZPIP12526 2 0 1 CIRCULAR 0.009 RCP 11.5 11.5 None 0.55 18.3 18.2 None 26.8 37.4 None 30.2 66.7 Both Upstream and Downstream

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 65 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13981 B ZPIP15023 1.5 0 1 CIRCULAR 0.009 RCP 10.7 10.7 None 1.06 17.5 17.5 None 26.2 26.2 None 29.7 30.4 None PIPE14042 B ZPIP17344 2 0 1 CIRCULAR 0.008 RCP 23.0 22.4 None 1.13 36.7 36.5 None 53.8 55.7 None 60.7 58.0 None PIPE13906 B ZPIP16932 2 0 1 CIRCULAR 0.003 RCP 12.7 12.6 None 1.02 20.7 20.2 None 30.6 30.8 None 34.6 34.8 None PIPE13731 B ZPIP12390 1.5 0 1 CIRCULAR 0.004 RCP 7.0 7.0 None 1 11.6 11.5 None 17.3 17.3 None 19.6 19.7 None PIPE13909 B ZPIP13418 4 0 1 CIRCULAR 0.009 RCP 161.7 159.6 None 1.17 318.3 260.4 None 496.1 336.9 Upstream 603.5 375.8 Upstream PIPE14083 B ZPIP15109 5 0 1 CIRCULAR 0.006 RCP 177.4 176.6 None 0.91 300.8 301.3 None 449.4 459.0 None 515.8 486.2 None PIPE14160 B ZPIP16159 3 0 1 CIRCULAR 0.006 RCP 46.3 46.2 None 0.88 77.5 76.8 None 115.4 114.8 None 131.3 131.5 None PIPE13952 B ZPIP11415 1.5 0 1 CIRCULAR 0.010 RCP 8.5 8.3 None 0.81 15.0 15.1 None 22.7 23.4 None 25.9 25.8 None PIPE13785 B ZPIP10112 1.5 0 1 CIRCULAR 0.020 RCP 10.4 10.4 None 0.69 16.6 16.6 None 24.3 40.8 None 27.4 35.8 Both Upstream and Downstream PIPE13759 B ZPIP12417 3.5 0 1 CIRCULAR 0.010 RCP 91.1 90.6 None 0.9 148.3 144.6 None 220.6 211.5 None 250.5 235.3 None PIPE14021 B ZPIP11444 2.5 0 1 CIRCULAR 0.010 RCP 29.5 29.5 None 0.74 50.1 49.8 None 75.0 74.0 None 85.3 86.5 None PIPE14097 B ZPIP11481 5 0 1 CIRCULAR 0.008 RCP 187.4 186.4 None 0.81 317.7 324.1 None 475.0 443.8 None 545.5 480.0 None PIPE14155 B ZPIP11984 3 0 5 CIRCULAR 0.033 RCP 620.0 617.8 None 1.02 1075.9 894.7 Upstream 1634.8 1129.5 Upstream 1876.8 1220.2 Upstream PIPE13840 B ZPIP10177 5 0 1 CIRCULAR 0.015 RCP 238.9 237.6 None 0.73 414.0 410.8 None 626.0 577.6 None 723.3 636.0 None PIPE13872 B ZPIP16725 5 0 1 CIRCULAR 0.016 RCP 237.3 236.2 None 0.73 411.8 409.1 None 622.1 575.1 None 718.3 633.6 None PIPE13913 B ZPIP13424 3 0 1 CIRCULAR 0.005 RCP 32.5 32.6 None 0.7 55.1 54.5 None 82.6 79.2 None 94.0 88.7 None PIPE13836 B ZPIP10174 5 0 1 CIRCULAR 0.020 RCP 274.0 272.4 None 0.75 473.4 480.0 None 714.8 648.6 None 824.9 696.3 Upstream PIPE13896 B ZPIP13389 3 0 1 CIRCULAR 0.005 RCP 32.7 32.7 None 0.7 55.5 54.7 None 83.3 79.2 None 94.8 88.7 None PIPE13842 B ZPIP12639 5 0 1 CIRCULAR 0.020 RCP 257.4 257.5 None 0.71 446.2 450.6 None 681.4 615.6 Upstream 788.4 667.6 Both Upstream and Downstream PIPE13914 B ZPIP10588 3 0 1 CIRCULAR 0.010 RCP 53.8 53.5 None 0.81 87.5 89.5 None 129.7 118.5 None 147.1 119.3 None PIPE13915 B ZPIP16947 3 0 1 CIRCULAR 0.009 RCP 48.8 48.7 None 0.75 79.4 81.1 None 117.6 108.5 None 133.4 112.9 Upstream PIPE14018 B ZPIP17333 3 0 1 CIRCULAR 0.013 RCP 46.3 46.2 None 0.62 77.5 76.8 None 115.4 114.6 None 131.3 131.3 None PIPE13792 B ZPIP10124 4 0 1 CIRCULAR 0.022 RCP 145.1 143.9 None 0.67 240.4 243.5 None 358.8 341.5 None 412.8 361.7 Upstream PIPE14016 B ZPIP17331 3 0 1 CIRCULAR 0.010 RCP 37.5 37.5 None 0.57 63.5 62.9 None 94.8 93.3 None 108.0 108.4 None PIPE13999 B ZPIP15035 3 0 1 CIRCULAR 0.009 RCP 42.0 41.9 None 0.65 67.1 64.8 None 98.3 93.6 None 111.4 103.8 None PIPE13865 B ZPIP10192 1.5 0 1 CIRCULAR 0.014 RCP 7.3 7.3 None 0.58 11.9 11.8 None 17.6 17.6 None 19.9 19.9 None PIPE13875 B ZPIP12673 2 0 1 CIRCULAR 0.023 RCP 23.0 23.0 None 0.67 37.6 37.9 None 56.2 52.2 Upstream 63.8 54.5 Upstream PIPE13908 B ZPIP10587 2.5 0 1 CIRCULAR 0.004 RCP 13.6 13.7 None 0.55 23.4 23.4 None 35.3 32.9 None 40.2 39.3 None PIPE13828 B ZPIP10172 3 0 1 CIRCULAR 0.009 RCP 32.4 32.5 None 0.52 58.1 57.3 None 88.4 93.2 None 101.2 96.6 Both Upstream and Downstream PIPE13838 B ZPIP12634 5 0 1 CIRCULAR 0.025 RCP 241.1 239.5 None 0.58 418.0 409.4 None 633.5 596.5 None 731.6 635.8 Upstream PIPE14025 B ZPIP17335 1.5 0 1 CIRCULAR 0.013 RCP 5.9 5.9 None 0.5 12.4 12.2 None 19.6 17.0 Upstream 22.7 18.5 Upstream PIPE14029 B ZPIP11447 1.5 0 1 CIRCULAR 0.006 RCP 4.9 4.9 None 0.59 7.7 7.6 None 11.2 10.4 None 12.6 12.8 None PIPE13874 B ZPIP12672 2.5 0 1 CIRCULAR 0.012 RCP 30.0 29.9 None 0.66 48.7 47.0 None 72.2 66.6 None 81.8 69.5 None PIPE14099 B ZPIP15123 2 0 1 CIRCULAR 0.017 RCP 11.5 11.5 None 0.39 18.2 18.2 None 26.7 32.9 None 30.1 45.4 Both Upstream and Downstream PIPE13652 B ZPIP10016 4 0 1 CIRCULAR 0.017 RCP 112.0 112.2 None 0.6 187.1 184.7 None 279.4 252.1 None 317.8 286.6 None PIPE14108 B ZPIP17363 2 0 1 CIRCULAR 0.033 RCP 24.8 24.9 None 0.61 43.5 43.0 None 65.9 60.2 None 75.2 62.4 Upstream PIPE13848 B ZPIP12643 3 0 1 CIRCULAR 0.005 RCP 29.8 29.8 None 0.66 48.1 47.6 None 71.1 63.3 None 80.5 68.9 None PIPE14055 B ZPIP15082 3 0 1 CIRCULAR 0.037 RCP 73.6 73.1 None 0.57 122.3 122.6 None 182.1 182.7 None 207.0 190.9 None PIPE13876 B ZPIP12674 2.5 0 1 CIRCULAR 0.009 RCP 23.1 23.1 None 0.59 37.8 36.7 None 56.4 52.2 None 64.0 57.6 None PIPE14066 B ZPIP11465 3.5 0 1 CIRCULAR 0.021 RCP 80.3 79.8 None 0.55 133.5 134.0 None 199.2 202.0 None 226.7 210.8 None PIPE13894 B ZPIP13281 2.5 0 1 CIRCULAR 0.009 RCP 12.2 12.2 None 0.32 29.2 29.2 None 47.9 47.8 None 55.8 55.7 None PIPE13905 B ZPIP16931 2 0 1 CIRCULAR 0.017 RCP 15.5 15.5 None 0.52 25.2 24.8 None 37.3 37.9 None 42.2 42.9 None PIPE13911 B ZPIP13422 2 0 1 CIRCULAR 0.009 RCP 11.5 11.6 None 0.53 18.9 18.9 None 28.0 28.1 None 31.7 31.8 None PIPE13687 B ZPIP12345 2 0 1 CIRCULAR 0.027 RCP 22.1 22.0 None 0.59 36.1 35.9 None 53.7 52.6 Downstream 60.9 53.4 Downstream PIPE13735 B ZPIP16706 2 0 1 CIRCULAR 0.019 RCP 15.5 15.5 None 0.5 25.4 25.3 None 37.7 36.2 None 42.8 44.9 None PIPE13847 B ZPIP12642 1.5 0 1 CIRCULAR 0.032 RCP 11.2 11.2 None 0.59 18.0 17.8 None 26.5 26.2 None 30.0 27.0 Upstream PIPE13646 B ZPIP12307 2 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.3 None 0.0 14.5 Upstream 0.0 22.6 Upstream PIPE13841 B ZPIP10178 5 0 1 CIRCULAR 0.029 RCP 236.5 235.9 None 0.53 410.6 409.0 None 620.1 575.1 None 715.0 633.6 None PIPE13904 B ZPIP13394 4.5 0 1 CIRCULAR 0.009 RCP 128.9 122.6 None 0.66 255.8 204.6 None 416.1 247.5 None 487.0 263.0 None PIPE13704 B ZPIP10043 3 0 1 CIRCULAR 0.014 RCP 36.6 36.7 None 0.46 65.3 64.3 None 99.3 91.1 None 113.5 112.0 Upstream PIPE13751 B ZPIP12411 4 0 1 CIRCULAR 0.055 RCP 190.6 190.1 None 0.57 318.6 321.5 None 473.0 447.9 None 546.1 469.9 None PIPE14044 B ZPIP11454 2.5 0 1 CIRCULAR 0.033 RCP 38.9 38.4 None 0.51 65.3 65.1 None 97.5 97.0 None 110.7 105.3 None PIPE13667 B ZPIP10021 2.5 0 1 CIRCULAR 0.005 RCP 13.9 13.9 None 0.49 23.8 23.7 None 35.7 33.8 None 40.6 39.4 None PIPE13737 B ZPIP10057 2 0 1 CIRCULAR 0.045 RCP 28.5 28.5 None 0.6 45.9 45.4 None 67.8 62.4 None 76.7 64.8 None PIPE13656 B ZPIP12317 1.5 0 1 CIRCULAR 0.050 RCP 12.9 12.9 None 0.55 20.7 20.4 None 30.4 30.7 None 34.4 31.2 None PIPE13736 B ZPIP16707 2 0 1 CIRCULAR 0.018 RCP 12.5 12.5 None 0.41 20.6 20.6 None 30.7 30.6 None 34.9 40.5 None PIPE13727 B ZPIP12388 1.5 0 1 CIRCULAR 0.023 RCP 7.4 7.4 None 0.46 12.0 11.9 None 17.7 18.2 None 20.0 20.9 None PIPE13867 B ZPIP10194 2.5 0 1 CIRCULAR 0.017 RCP 30.2 30.2 None 0.57 49.2 47.3 None 72.8 66.6 None 82.4 69.5 None PIPE14070 B ZPIP17350 5 0 1 CIRCULAR 0.018 RCP 175.8 175.9 None 0.5 298.3 301.2 None 447.5 436.8 None 511.0 460.1 None PIPE13705 B ZPIP12366 3.5 0 1 CIRCULAR 0.018 RCP 67.8 68.0 None 0.51 121.0 120.8 None 185.3 170.8 None 210.1 174.6 None PIPE13835 B ZPIP12629 3 0 1 CIRCULAR 0.012 RCP 35.3 35.4 None 0.49 63.1 62.3 None 96.1 89.8 None 109.9 93.9 Both Upstream and Downstream PIPE13997 B ZPIP11435 2 0 1 CIRCULAR 0.009 RCP 6.2 6.2 None 0.29 10.3 10.3 None 15.3 22.1 None 17.4 27.9 None PIPE13631 B ZPIP10007 4 0 1 CIRCULAR 0.024 RCP 112.3 112.5 None 0.5 187.8 185.3 None 280.8 251.9 None 319.4 289.3 None PIPE13690 B ZPIP10032 3.5 0 1 CIRCULAR 0.018 RCP 66.7 66.8 None 0.5 107.5 106.5 None 157.9 159.9 None 179.0 169.9 None PIPE13812 B ZPIP16721 3.5 0 1 CIRCULAR 0.018 RCP 68.1 68.0 None 0.51 120.9 119.3 None 177.4 170.2 None 205.3 171.4 None PIPE13984 B ZPIP17319 2 0 1 CIRCULAR 0.011 RCP 10.4 10.4 None 0.44 17.2 17.1 None 25.8 25.1 None 29.3 30.0 None PIPE13634 B ZPIP16693 3 0 1 CIRCULAR 0.016 RCP 27.1 27.1 None 0.32 44.1 44.0 None 65.1 64.9 None 73.7 107.8 None PIPE13959 B ZPIP17309 3 0 1 CIRCULAR 0.006 RCP 20.9 20.9 None 0.4 38.6 38.8 None 59.3 58.9 None 68.0 66.9 None PIPE13889 B ZPIP13134 1.5 0 1 CIRCULAR 0.010 RCP 4.7 4.7 None 0.45 7.5 7.5 None 11.0 11.0 None 12.5 13.0 None PIPE13619 B ZPIP10002 4 0 1 CIRCULAR 0.017 RCP 89.4 89.7 None 0.47 148.7 148.4 None 221.4 218.1 None 251.4 236.0 Upstream PIPE14000 B ZPIP15037 3 0 1 CIRCULAR 0.067 RCP 83.9 83.5 None 0.48 136.1 132.6 None 201.6 193.8 None 228.8 214.8 None PIPE14062 B ZPIP15088 5 0 1 CIRCULAR 0.021 RCP 182.4 181.5 None 0.48 309.2 310.4 None 462.3 438.9 None 530.5 473.0 None PIPE13873 B ZPIP10197 2.5 0 1 CIRCULAR 0.019 RCP 30.1 30.0 None 0.53 48.8 47.1 None 72.1 66.6 None 81.7 69.5 None PIPE13777 B ZPIP10078 1.5 0 1 CIRCULAR 0.025 RCP 7.6 7.6 None 0.45 12.3 12.3 None 18.2 17.8 None 20.6 20.5 None PIPE13653 B ZPIP12312 3 0 1 CIRCULAR 0.030 RCP 41.1 41.1 None 0.36 66.9 66.6 None 98.4 98.5 None 111.4 140.2 None PIPE13891 B ZPIP10456 1.5 0 1 CIRCULAR 0.009 RCP 4.7 4.7 None 0.47 7.5 7.5 None 11.1 11.0 None 12.5 12.3 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 66 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14147 B ZPIP11851 3 0 1 CIRCULAR 0.010 RCP 26.1 26.1 None 0.39 47.9 47.7 None 73.3 71.6 None 83.4 81.2 None PIPE14073 B ZPIP11467 2 0 1 CIRCULAR 0.025 RCP 4.0 4.0 None 0.11 6.3 6.3 None 9.2 20.5 None 10.3 43.3 Downstream PIPE13869 B ZPIP12668 3.5 0 1 CIRCULAR 0.019 RCP 65.5 65.6 None 0.47 105.5 104.1 None 155.3 156.1 None 175.9 166.3 None PIPE13702 B ZPIP10041 2.5 0 1 CIRCULAR 0.020 RCP 30.1 30.1 None 0.52 49.0 47.2 None 72.4 66.6 None 82.1 69.5 None PIPE13647 B ZPIP12308 2 0 1 CIRCULAR 0.059 RCP 26.5 26.6 None 0.48 42.8 42.5 None 63.2 62.4 None 71.6 64.8 None PIPE14157 B ZPIP12014 3 0 1 CIRCULAR 0.011 RCP 27.2 27.3 None 0.39 44.5 44.3 None 65.5 65.1 None 74.1 80.7 None PIPE13764 B ZPIP10069 4 0 1 CIRCULAR 0.044 RCP 133.4 132.5 None 0.44 221.8 219.2 None 331.7 357.0 None 378.3 351.9 Both Upstream and Downstream PIPE14008 B ZPIP17328 2 0 1 CIRCULAR 0.010 RCP 9.0 9.0 None 0.4 15.5 15.4 None 23.4 23.0 None 26.7 25.7 None PIPE14054 B ZPIP15080 3 0 1 CIRCULAR 0.053 RCP 61.9 61.5 None 0.4 103.6 103.7 None 154.6 150.0 None 175.8 177.2 None PIPE13718 B ZPIP10048 1.5 0 1 CIRCULAR 0.034 RCP 8.5 8.5 None 0.44 13.6 13.5 None 20.0 20.0 None 22.6 22.2 None PIPE13636 B ZPIP16695 1.5 0 1 CIRCULAR 0.020 RCP 1.4 1.4 None 0.1 2.7 2.7 None 4.1 14.2 None 4.7 16.8 None PIPE13749 B ZPIP10062 2 0 1 CIRCULAR 0.016 RCP 7.6 7.6 None 0.27 13.6 13.6 None 20.8 20.7 None 23.8 32.7 None PIPE13763 B ZPIP10068 4 0 1 CIRCULAR 0.049 RCP 146.5 145.4 None 0.46 242.8 248.8 None 362.0 341.3 None 416.9 362.9 None PIPE14107 B ZPIP17362 2 0 1 CIRCULAR 0.061 RCP 24.8 24.9 None 0.45 43.5 43.6 None 65.8 63.3 Upstream 75.0 63.8 Both Upstream and Downstream FLOW10046 B 5 10 1 TRAPEZOIDAL 0.000 EARTHEN 67.2 28.4 None 0.31 55.4 56.5 None 85.5 88.4 None 98.6 102.6 None PIPE14048 B ZPIP15073 1.5 0 1 CIRCULAR 0.090 RCP 11.2 11.3 None 0.36 20.5 20.6 None 31.4 31.4 None 36.0 35.4 None PIPE14122 B ZPIP11784 2 0 1 CIRCULAR 0.020 RCP 3.8 3.8 None 0.12 9.8 9.8 None 16.3 35.8 None 19.1 35.9 Downstream PIPE13818 B ZPIP12615 1.5 0 1 CIRCULAR 0.087 RCP 3.0 3.0 None 0.1 5.7 5.7 None 8.9 27.3 None 10.2 34.4 Both Upstream and Downstream PIPE13827 B ZPIP10171 3.5 0 1 CIRCULAR 0.023 RCP 65.5 65.6 None 0.43 105.5 104.3 None 155.3 156.3 None 175.9 166.3 None PIPE14058 B ZPIP15084 2 0 1 CIRCULAR 0.017 RCP 5.7 5.7 None 0.19 9.4 9.4 None 14.0 25.5 None 15.9 32.8 Both Upstream and Downstream PIPE14149 B ZPIP11853 3 0 1 CIRCULAR 0.015 RCP 28.9 28.9 None 0.36 52.4 51.9 None 79.8 77.4 None 90.5 88.3 None PIPE13703 B ZPIP10042 2.5 0 1 CIRCULAR 0.058 RCP 32.3 32.5 None 0.33 57.5 57.6 None 87.2 90.6 None 99.9 108.0 None PIPE13724 B ZPIP12385 2 0 1 CIRCULAR 0.050 RCP 11.7 11.7 None 0.23 19.4 19.4 None 29.0 55.0 None 33.0 54.8 None PIPE13790 B ZPIP12527 4 0 1 CIRCULAR 0.051 RCP 143.1 142.1 None 0.44 237.4 234.8 None 354.3 336.9 None 406.2 352.3 Both Upstream and Downstream PIPE14047 B ZPIP15072 1.5 0 1 CIRCULAR 0.098 RCP 11.2 11.3 None 0.34 20.5 20.6 None 31.4 31.4 None 36.0 35.7 None PIPE13712 B ZPIP10046 2 0 1 CIRCULAR 0.043 RCP 19.7 19.8 None 0.42 31.5 31.5 None 46.4 46.1 None 52.5 51.1 None PIPE13813 B ZPIP10165 1.5 0 1 CIRCULAR 0.009 RCP 3.8 3.8 None 0.37 6.4 6.4 None 9.5 9.5 None 10.8 10.9 None PIPE13925 B ZPIP14771 2 0 1 CIRCULAR 0.019 RCP 13.5 13.6 None 0.43 22.0 21.9 None 32.5 32.0 None 36.9 33.9 None PIPE14064 B ZPIP11462 3 0 1 CIRCULAR 0.073 RCP 75.2 75.6 None 0.42 128.6 128.0 None 193.6 185.7 None 220.7 194.2 None PIPE14090 B ZPIP15115 5 0 1 CIRCULAR 0.028 RCP 183.4 182.4 None 0.42 310.7 311.8 None 464.4 432.8 None 533.3 469.2 None PIPE13799 B ZPIP12533 3.5 0 1 CIRCULAR 0.040 RCP 84.0 83.5 None 0.42 136.2 132.8 None 202.1 192.9 None 229.3 214.8 None PIPE14053 B ZPIP15079 3 0 1 CIRCULAR 0.074 RCP 69.4 68.9 None 0.38 115.6 115.8 None 172.2 167.7 None 195.8 193.7 None PIPE13695 B ZPIP10040 3.5 0 1 CIRCULAR 0.085 RCP 97.3 98.0 None 0.33 188.4 193.0 None 292.8 291.0 None 340.4 311.5 None PIPE13819 B ZPIP16723 1.5 0 1 CIRCULAR 0.007 RCP 3.6 3.5 None 0.4 5.6 5.6 None 8.2 8.2 None 9.3 9.3 None PIPE13701 B ZPIP16701 2.5 0 1 CIRCULAR 0.058 RCP 32.3 32.4 None 0.33 57.4 57.6 None 87.3 90.7 None 99.9 104.2 Upstream PIPE13766 B ZPIP12421 3.5 0 1 CIRCULAR 0.065 RCP 103.3 102.5 None 0.4 167.8 163.6 None 249.3 236.6 None 282.8 267.5 None PIPE14013 B ZPIP11442 2.5 0 1 CIRCULAR 0.035 RCP 27.2 27.2 None 0.36 46.4 46.3 None 69.6 69.2 None 79.2 80.5 None PIPE13734 B ZPIP16705 2 0 1 CIRCULAR 0.042 RCP 17.8 17.8 None 0.38 29.1 29.0 None 43.2 39.8 None 49.0 48.2 None PIPE13927 B ZPIP11293 2 0 1 CIRCULAR 0.007 RCP 7.6 7.6 None 0.4 12.0 12.0 None 17.5 17.4 None 19.7 19.5 None PIPE13951 B ZPIP11414 2.5 0 1 CIRCULAR 0.023 RCP 20.3 20.4 None 0.33 37.8 37.8 None 57.9 57.5 None 66.3 64.5 None PIPE14052 B ZPIP11457 3 0 1 CIRCULAR 0.073 RCP 69.3 68.9 None 0.38 115.5 115.7 None 172.1 167.6 None 195.7 186.1 None PIPE14059 B ZPIP15085 4.5 0 1 CIRCULAR 0.050 RCP 171.9 172.1 None 0.39 291.3 291.8 None 437.6 429.6 None 498.8 453.8 Upstream PIPE14049 B ZPIP17347 3 0 1 CIRCULAR 0.032 RCP 44.5 44.1 None 0.37 75.4 75.2 None 112.9 108.1 None 128.4 122.0 None PIPE13679 B ZPIP12336 1.5 0 1 CIRCULAR 0.008 RCP 3.6 3.5 None 0.39 5.6 5.6 None 8.3 8.2 None 9.3 9.3 None PIPE13689 B ZPIP12347 1.5 0 1 CIRCULAR 0.038 RCP 7.0 7.0 None 0.34 11.4 11.4 None 16.9 17.7 None 19.2 20.7 Upstream PIPE13722 B ZPIP10052 2 0 1 CIRCULAR 0.021 RCP 12.5 12.5 None 0.38 20.3 20.2 None 30.0 29.9 None 33.9 33.4 None PIPE13698 B ZPIP12362 1.5 0 1 CIRCULAR 0.015 RCP 4.9 4.9 None 0.38 7.8 7.8 None 11.5 11.3 None 13.0 12.9 None PIPE13844 B ZPIP12641 5 0 1 CIRCULAR 0.063 RCP 248.6 246.9 None 0.38 431.4 423.3 None 654.7 601.7 None 756.1 654.5 None PIPE13955 B ZPIP11416 2.5 0 1 CIRCULAR 0.025 RCP 20.4 20.4 None 0.32 37.8 37.7 None 57.8 57.5 None 66.1 64.3 None PIPE14010 B ZPIP17330 2 0 1 CIRCULAR 0.046 RCP 16.4 16.4 None 0.34 28.9 28.8 None 43.6 43.1 None 49.8 48.5 None PIPE13728 B ZPIP12389 3 0 1 CIRCULAR 0.025 RCP 45.2 45.2 None 0.43 73.2 72.4 None 108.2 99.6 None 122.5 104.5 None PIPE13863 B ZPIP12661 5 0 1 CIRCULAR 0.073 RCP 274.1 272.4 None 0.39 473.6 468.3 None 714.7 642.8 None 824.8 696.3 None PIPE14001 B ZPIP17326 2 0 1 CIRCULAR 0.056 RCP 18.9 19.0 None 0.35 31.1 31.1 None 46.4 45.7 None 52.6 53.4 None PIPE13620 B ZPIP12283 3 0 1 CIRCULAR 0.010 RCP 6.1 6.1 None 0.09 9.8 9.5 None 14.4 51.8 None 16.3 63.9 None PIPE13781 B ZPIP10097 5 0 1 CIRCULAR 0.065 RCP 242.8 241.2 None 0.36 420.8 412.5 None 637.8 602.9 None 736.5 639.2 None PIPE14046 B ZPIP15071 2.5 0 1 CIRCULAR 0.079 RCP 41.0 40.5 None 0.35 69.4 69.2 None 103.9 99.4 None 118.1 111.7 None PIPE13691 B ZPIP10035 1.5 0 1 CIRCULAR 0.021 RCP 5.2 5.2 None 0.34 8.6 8.6 None 12.8 12.8 None 14.6 14.5 None PIPE13815 B ZPIP10167 1.5 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 5.9 None 0.1 10.6 Both Upstream and Downstream PIPE13983 B ZPIP15025 2 0 1 CIRCULAR 0.047 RCP 16.7 16.7 None 0.34 27.4 27.4 None 40.9 40.3 None 46.4 47.0 None PIPE14095 B ZPIP11479 2 0 1 CIRCULAR 0.050 RCP 16.4 16.5 None 0.33 28.9 28.8 None 43.8 43.2 None 50.0 48.4 None PIPE13650 B ZPIP12311 4 0 1 CIRCULAR 0.117 RCP 190.6 190.2 None 0.39 318.8 328.6 None 473.3 446.7 None 546.6 468.1 None PIPE13752 B ZPIP12412 4 0 1 CIRCULAR 0.117 RCP 190.6 190.2 None 0.39 318.7 325.8 None 473.1 446.4 None 546.2 468.3 None PIPE14002 B ZPIP17327 3.5 0 1 CIRCULAR 0.050 RCP 83.9 83.5 None 0.37 136.1 132.6 None 201.7 193.9 None 228.8 214.8 None PIPE13768 B ZPIP12423 3.5 0 1 CIRCULAR 0.062 RCP 90.9 90.4 None 0.36 148.9 144.3 None 220.3 208.0 None 250.0 235.1 None PIPE14063 B ZPIP15089 3 0 1 CIRCULAR 0.039 RCP 45.0 45.3 None 0.34 76.1 76.1 None 114.1 111.8 None 130.0 123.8 None PIPE14089 B ZPIP11478 5 0 1 CIRCULAR 0.037 RCP 183.0 182.2 None 0.36 310.3 311.4 None 463.9 434.4 None 532.3 470.7 None PIPE13769 B ZPIP12424 3.5 0 1 CIRCULAR 0.066 RCP 92.9 92.3 None 0.36 151.2 147.3 None 224.7 212.7 None 254.8 240.1 None PIPE14026 B ZPIP17336 1.5 0 1 CIRCULAR 0.049 RCP 7.5 7.5 None 0.32 14.9 14.7 None 23.3 20.2 None 26.8 21.7 None PIPE14130 B ZPIP11799 1.5 0 1 CIRCULAR 0.009 RCP 3.5 3.5 None 0.35 5.6 5.6 None 8.2 8.2 None 9.3 9.3 None PIPE14033 B ZPIP17340 3 0 1 CIRCULAR 0.040 RCP 43.5 43.8 None 0.33 73.7 73.7 None 110.5 108.2 None 125.9 120.8 None PIPE14056 B ZPIP15083 3 0 1 CIRCULAR 0.103 RCP 71.7 71.2 None 0.33 119.3 119.6 None 177.8 179.8 None 202.1 195.2 None PIPE13765 B ZPIP10070 3.5 0 1 CIRCULAR 0.075 RCP 95.9 94.9 None 0.34 155.7 151.7 None 231.3 219.3 None 262.4 247.5 None PIPE13830 B ZPIP12624 3 0 1 CIRCULAR 0.015 RCP 29.6 29.7 None 0.37 52.4 52.1 None 79.7 77.6 None 91.2 72.7 Both Upstream and Downstream PIPE13998 B ZPIP11436 3 0 1 CIRCULAR 0.094 RCP 73.0 72.6 None 0.36 117.9 114.6 None 174.7 164.9 None 198.1 184.6 None CULV10248 B ZCUL11000E 10 5 2 RECT_CLOSED 0.015 RCP 680.1 690.2 Upstream 0.35 1650.7 1783.6 Upstream 1659.2 1811.2 Upstream 1715.9 1795.8 Upstream PIPE13775 B ZPIP12434 2 0 1 CIRCULAR 0.062 RCP 18.5 18.5 None 0.33 30.0 30.0 None 44.3 43.8 None 50.2 50.2 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 67 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13831 B ZPIP12625 3 0 1 CIRCULAR 0.010 RCP 25.9 25.9 None 0.39 42.6 42.4 None 63.3 60.9 None 71.9 59.5 Both Upstream and Downstream PIPE14027 B ZPIP17337 1.5 0 1 CIRCULAR 0.086 RCP 9.5 9.6 None 0.31 18.3 18.1 None 28.3 25.3 None 32.5 27.4 None PIPE14050 B ZPIP17348 3 0 1 CIRCULAR 0.056 RCP 51.1 50.6 None 0.32 86.0 85.9 None 128.6 123.6 None 146.2 140.0 None PIPE13814 B ZPIP10166 1.5 0 1 CIRCULAR 0.076 RCP 8.3 8.3 None 0.29 13.4 13.4 None 19.8 23.6 None 22.4 25.6 Both Upstream and Downstream PIPE13684 B ZPIP10030 1.5 0 1 CIRCULAR 0.026 RCP 5.7 5.8 None 0.34 9.1 9.1 None 13.3 13.2 None 15.0 14.9 None PIPE13953 B ZPIP17306 1.5 0 1 CIRCULAR 0.009 RCP 3.3 3.3 None 0.32 5.3 5.3 None 7.8 7.8 None 8.9 8.8 None PIPE14100 B ZPIP15124 2 0 1 CIRCULAR 0.004 RCP 5.0 5.0 None 0.33 7.9 7.9 None 11.5 11.5 None 12.9 13.0 None PIPE14116 B ZPIP11777 1.5 0 1 CIRCULAR 0.034 RCP 5.3 5.3 None 0.28 8.4 8.4 None 12.1 15.1 None 13.7 16.8 None PIPE13721 B ZPIP10051 4 0 1 CIRCULAR 0.055 RCP 116.0 116.4 None 0.35 194.4 191.6 None 291.1 255.7 None 331.2 286.7 None PIPE13754 B ZPIP10065 5 0 1 CIRCULAR 0.031 RCP 148.6 149.2 None 0.32 252.9 249.2 None 379.8 345.6 None 432.9 392.7 None PIPE13982 B ZPIP15024 3 0 1 CIRCULAR 0.107 RCP 73.1 72.6 None 0.33 117.9 114.7 None 174.8 164.9 None 198.3 185.2 None PIPE14051 B ZPIP11456 3 0 1 CIRCULAR 0.066 RCP 52.7 52.3 None 0.3 88.8 88.7 None 132.8 127.8 None 151.1 145.8 None PIPE13694 B ZPIP10038 1.5 0 1 CIRCULAR 0.071 RCP 5.5 5.5 None 0.2 12.5 12.5 None 20.2 20.2 None 23.5 23.5 None PIPE13747 B ZPIP12403 1.5 0 1 CIRCULAR 0.084 RCP 9.7 9.7 None 0.32 15.6 15.7 None 23.0 23.1 None 26.0 25.7 Downstream CULV10245 B ZCUL11000A 10 5 2 RECT_CLOSED 0.018 RCP 678.1 688.6 Downstream 0.32 1637.0 1791.7 Downstream 1658.0 1798.0 Downstream 1715.6 1793.3 Downstream PIPE13628 B ZPIP16691 4 0 1 CIRCULAR 0.055 RCP 113.0 113.3 None 0.34 189.2 186.7 None 283.2 247.6 None 322.2 279.2 None PIPE13713 B ZPIP12372 2 0 1 CIRCULAR 0.074 RCP 19.7 19.8 None 0.32 31.6 31.6 None 46.5 46.2 None 52.6 51.3 None PIPE13717 B ZPIP16703 2 0 1 CIRCULAR 0.075 RCP 19.7 19.8 None 0.32 31.5 31.5 None 46.4 46.1 None 52.5 51.2 None PIPE13753 B ZPIP12413 4 0 1 CIRCULAR 0.217 RCP 221.6 221.7 None 0.33 370.1 382.9 None 550.5 521.2 None 631.9 555.8 None PIPE13772 B ZPIP12427 1.5 0 1 CIRCULAR 0.032 RCP 5.6 5.6 None 0.3 9.2 9.2 None 13.7 13.7 None 15.5 15.5 None CULV10244 B ZCUL044A 10 5 2 RECT_CLOSED 0.011 RCP 650.4 662.6 None 0.39 1108.9 1016.5 Downstream 1526.2 1325.1 Downstream 1660.3 1430.5 Downstream PIPE13871 B ZPIP16724 5 0 1 CIRCULAR 0.092 RCP 249.9 248.1 None 0.31 433.7 425.8 None 658.7 601.7 None 760.6 657.1 None CULV10246 B ZCUL11000C 10 5 2 RECT_CLOSED 0.015 Unknown 674.8 688.7 Upstream 0.34 1844.0 1417.0 Upstream 1824.5 1637.5 Upstream 1811.0 1667.8 Upstream PIPE13933 B ZPIP11403 1.5 0 1 CIRCULAR 0.010 RCP 3.3 3.3 None 0.32 5.3 5.2 None 7.7 7.7 None 8.7 8.7 None PIPE13949 B ZPIP17303 1.5 0 1 CIRCULAR 0.010 RCP 3.3 3.3 None 0.31 5.3 5.3 None 7.8 7.8 None 8.9 8.8 None PIPE13995 B ZPIP17323 2.5 0 1 CIRCULAR 0.063 RCP 30.6 30.7 None 0.3 50.1 50.3 None 74.6 74.0 None 84.7 85.4 None PIPE14163 B ZPIP12163 5 0 1 CIRCULAR 0.093 RCP 250.2 248.2 None 0.31 434.5 426.5 None 660.3 600.5 None 762.6 657.3 None PIPE13936 B ZPIP14980 1.5 0 1 CIRCULAR 0.149 RCP 11.5 11.6 None 0.28 19.5 19.6 None 29.3 29.4 None 33.4 33.4 None PIPE14106 B ZPIP15129 2 0 1 CIRCULAR 0.006 RCP 5.4 5.4 None 0.31 8.8 8.8 None 12.9 12.9 None 14.6 14.6 None PIPE14028 B ZPIP11446 1.5 0 1 CIRCULAR 0.104 RCP 9.5 9.6 None 0.28 18.3 18.1 None 28.3 25.3 None 32.5 27.4 None PIPE13743 B ZPIP16709 3 0 1 CIRCULAR 0.029 RCP 30.8 30.9 None 0.27 51.3 51.3 None 76.6 78.7 None 86.9 91.0 None PIPE13852 B ZPIP10183 3 0 1 CIRCULAR 0.027 RCP 30.8 30.9 None 0.28 51.4 51.2 None 76.8 79.7 None 87.2 88.0 Downstream PIPE13987 B ZPIP11429 2 0 1 CIRCULAR 0.048 RCP 13.9 13.9 None 0.28 23.0 23.0 None 34.5 33.8 None 39.2 39.8 None PIPE13989 B ZPIP11431 2 0 1 CIRCULAR 0.067 RCP 16.6 16.7 None 0.28 27.4 27.4 None 40.9 40.3 None 46.4 47.0 None PIPE14031 B ZPIP15059 2 0 1 CIRCULAR 0.012 RCP 7.8 7.9 None 0.32 12.3 12.2 None 18.0 17.1 None 20.3 19.8 None PIPE13637 B ZPIP10009 5 0 1 CIRCULAR 0.036 RCP 148.6 149.2 None 0.3 252.9 249.2 None 379.8 345.6 None 432.9 392.7 None PIPE13760 B ZPIP12418 4 0 1 CIRCULAR 0.057 RCP 104.3 103.5 None 0.3 169.4 165.4 None 252.3 237.8 None 285.8 270.7 None PIPE13829 B ZPIP10173 3 0 1 CIRCULAR 0.017 RCP 29.6 29.7 None 0.34 52.5 52.0 None 80.0 76.4 None 91.6 69.6 Both Upstream and Downstream PIPE13833 B ZPIP12627 2.5 0 1 CIRCULAR 0.100 RCP 41.8 41.8 None 0.32 67.8 65.4 None 100.2 99.0 None 113.5 102.5 None CULV10247 B ZCUL044C 10 5 2 RECT_CLOSED 0.009 RCP 588.4 599.5 Upstream 0.39 981.9 890.6 Upstream 1323.0 1133.9 Upstream 1425.3 1216.1 Upstream PIPE13633 B ZPIP12297 2 0 1 CIRCULAR 0.084 RCP 18.5 18.5 None 0.28 29.9 29.9 None 44.3 45.4 None 50.2 51.3 None PIPE13771 B ZPIP10072 1.5 0 1 CIRCULAR 0.030 RCP 5.3 5.3 None 0.29 8.4 8.4 None 12.4 12.4 None 14.0 14.0 None PIPE14109 B ZPIP17364 2.5 0 1 CIRCULAR 0.046 RCP 26.8 26.9 None 0.31 46.7 46.2 None 70.6 66.7 None 80.5 69.0 None PIPE13715 B ZPIP12374 2 0 1 CIRCULAR 0.103 RCP 21.5 21.6 None 0.3 34.4 34.4 None 50.6 50.3 None 57.2 55.9 None PIPE14060 B ZPIP15086 4.5 0 1 CIRCULAR 0.090 RCP 166.8 167.0 None 0.28 282.9 283.3 None 425.0 417.5 None 484.5 455.9 None PIPE14061 B ZPIP15087 3.5 0 1 CIRCULAR 0.089 RCP 86.5 86.9 None 0.29 148.9 148.3 None 224.4 217.2 None 255.9 230.6 None PIPE13710 B ZPIP10044 2 0 1 CIRCULAR 0.041 RCP 13.6 13.7 None 0.3 21.8 21.8 None 32.2 32.0 None 36.4 35.2 None PIPE13853 B ZPIP10184 2 0 1 CIRCULAR 0.083 CMP 10.3 10.3 None 0.29 16.3 16.3 None 23.8 23.8 None 26.9 26.9 None PIPE13645 B ZPIP12306 2.5 0 1 CIRCULAR 0.063 RCP 27.1 27.1 None 0.26 44.1 44.2 None 65.1 65.0 None 73.7 76.8 None PIPE13706 B ZPIP12367 2.5 0 1 CIRCULAR 0.105 RCP 40.9 40.8 None 0.31 66.3 63.8 None 98.0 94.4 None 111.0 99.6 None PIPE13926 B ZPIP14772 2 0 1 CIRCULAR 0.010 RCP 5.9 6.0 None 0.27 9.9 9.9 None 14.9 14.9 None 17.0 16.7 None PIPE13776 B ZPIP16714 1.5 0 1 CIRCULAR 0.070 RCP 7.6 7.6 None 0.27 12.3 12.3 None 18.2 17.8 None 20.6 20.6 None PIPE13922 B ZPIP11030 3 0 1 CIRCULAR 0.023 RCP 32.3 25.6 Both Upstream and Downstream 0.25 292.2 71.3 Both Upstream and Downstream 345.4 75.3 Both Upstream and Downstream 260.5 74.2 Both Upstream and Downstream PIPE13806 B ZPIP12565 2 0 1 CIRCULAR 0.019 RCP 6.9 6.9 None 0.22 11.3 11.4 None 16.9 22.7 None 19.2 22.9 Downstream PIPE14041 B ZPIP17343 1.5 0 1 CIRCULAR 0.066 RCP 3.6 3.6 None 0.13 5.6 6.2 None 8.2 19.2 None 9.2 19.6 None PIPE14045 B ZPIP11455 2.5 0 1 CIRCULAR 0.132 RCP 39.6 39.2 None 0.26 66.6 66.4 None 99.4 95.6 None 112.9 106.9 None PIPE14105 B ZPIP11485 2.5 0 1 CIRCULAR 0.057 RCP 26.0 26.1 None 0.27 44.6 44.3 None 66.9 63.7 None 76.2 70.4 None PIPE13795 B ZPIP12529 4 0 1 CIRCULAR 0.225 RCP 195.7 195.5 None 0.29 327.5 345.3 None 486.5 458.3 None 561.2 482.9 None PIPE14096 B ZPIP11480 2 0 1 CIRCULAR 0.057 RCP 11.2 11.3 None 0.21 20.5 20.6 None 31.4 37.4 None 36.0 38.0 None PIPE13625 B ZPIP12288 3.5 0 1 CIRCULAR 0.030 RCP 41.9 41.9 None 0.24 68.2 67.9 None 100.3 106.0 None 113.6 121.6 Downstream PIPE13626 B ZPIP12289 3 0 1 CIRCULAR 0.028 RCP 0.0 0.0 None 0 0.0 0.2 None 0.0 67.0 None 0.0 78.7 Both Upstream and Downstream PIPE13810 B ZPIP12608 2.5 0 1 CIRCULAR 0.059 RCP 30.2 30.2 None 0.3 49.2 47.3 None 72.9 66.8 None 82.6 69.5 None PIPE13824 B ZPIP12620 2.5 0 1 CIRCULAR 0.077 RCP 24.6 24.7 None 0.22 45.0 45.1 None 68.9 71.7 None 79.0 79.6 Downstream PIPE13834 B ZPIP12628 1.5 0 1 CIRCULAR 0.065 RCP 3.1 3.1 None 0.12 5.4 5.4 None 8.1 17.6 None 9.3 18.6 Downstream PIPE13846 B ZPIP10182 1.5 0 1 CIRCULAR 0.038 RCP 5.3 5.3 None 0.26 8.6 8.6 None 12.6 12.6 None 14.3 14.3 None PIPE13917 B ZPIP17060 3 0 1 CIRCULAR 0.011 RCP 17.6 17.7 None 0.26 28.8 28.8 None 42.8 42.6 None 48.5 48.4 None PIPE14124 B ZPIP11787 1.5 0 1 CIRCULAR 0.019 RCP 3.8 3.8 None 0.26 6.1 6.1 None 9.0 9.0 None 10.2 10.2 None PIPE13641 B ZPIP16698 4 0 1 CIRCULAR 0.229 RCP 193.4 193.1 None 0.28 323.5 334.5 None 480.4 453.5 None 554.5 476.2 None PIPE14012 B ZPIP11441 2 0 1 CIRCULAR 0.098 RCP 16.4 16.4 None 0.23 28.9 28.8 None 43.7 43.1 None 49.8 48.6 None PIPE14087 B ZPIP11476 3 0 1 CIRCULAR 0.030 RCP 29.3 29.4 None 0.25 49.7 49.7 None 74.5 71.8 None 84.8 79.3 None PIPE14111 B ZPIP11488 4.5 0 1 CIRCULAR 0.116 RCP 166.8 167.0 None 0.25 282.8 283.3 None 424.9 440.4 None 484.3 463.6 Downstream PIPE13723 B ZPIP12384 3 0 1 CIRCULAR 0.035 RCP 11.8 11.7 None 0.09 19.5 19.4 None 29.1 76.2 None 33.1 84.5 None PIPE13822 B ZPIP12618 2.5 0 1 CIRCULAR 0.079 RCP 33.4 33.4 None 0.29 54.4 52.3 None 80.6 75.5 None 91.2 78.3 None PIPE13923 B ZPIP14271 3 0 1 CIRCULAR 0.010 RCP 18.4 9.4 Downstream 0.14 292.3 29.0 Both Upstream and Downstream 312.2 48.4 Both Upstream and Downstream 260.6 44.9 Both Upstream and Downstream PIPE13657 B ZPIP10017 2 0 1 CIRCULAR 0.241 RCP 27.2 27.3 None 0.25 44.1 44.0 None 65.1 63.0 None 73.7 74.0 None PIPE13707 B ZPIP12369 2 0 1 CIRCULAR 0.015 RCP 7.0 7.0 None 0.25 11.2 11.2 None 16.4 16.4 None 18.6 18.5 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 68 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13720 B ZPIP10050 4 0 1 CIRCULAR 0.087 RCP 114.6 114.9 None 0.27 191.9 189.3 None 287.3 251.8 None 326.8 283.0 None PIPE13761 B ZPIP12419 4 0 1 CIRCULAR 0.079 RCP 105.0 104.2 None 0.26 170.5 166.5 None 253.8 242.9 None 287.6 271.6 Downstream PIPE13991 B ZPIP15029 2 0 1 CIRCULAR 0.013 RCP 6.2 6.2 None 0.24 10.3 10.3 None 15.4 15.4 None 17.5 17.4 None PIPE14040 B ZPIP17342 2 0 1 CIRCULAR 0.066 RCP 13.5 13.5 None 0.23 21.6 21.6 None 31.8 32.6 None 36.0 38.9 None PIPE14093 B ZPIP17359 1.5 0 1 CIRCULAR 0.060 RCP 5.1 5.1 None 0.2 9.7 9.8 None 15.1 15.0 None 17.3 17.3 None PIPE14181 B PIP19115 3 0 1 CIRCULAR 0.010 RCP 16.3 16.3 None 0.24 26.6 26.6 None 39.6 39.4 None 44.9 44.8 None PIPE14032 B ZPIP17339 1.5 0 1 CIRCULAR 0.008 RCP 2.2 2.2 None 0.24 3.4 3.5 None 5.0 5.0 None 5.6 6.0 None PIPE14065 B ZPIP11463 3 0 1 CIRCULAR 0.200 RCP 76.1 75.6 None 0.25 126.3 126.7 None 188.1 190.9 None 213.8 197.7 None PIPE14162 B ZPIP12162 1.5 0 1 CIRCULAR 0.008 RCP 2.3 2.3 None 0.25 3.7 3.7 None 5.4 5.4 None 6.2 6.1 None PIPE13903 B ZPIP13393 3 0 1 CIRCULAR 0.078 RCP 48.8 48.9 None 0.26 79.1 85.3 None 117.0 121.1 Upstream 132.5 121.0 Both Upstream and Downstream PIPE13672 B ZPIP12328 3 0 1 CIRCULAR 0.010 RCP 15.0 15.1 None 0.23 25.1 25.1 None 37.4 37.5 None 42.3 42.6 None PIPE13742 B ZPIP16708 2 0 1 CIRCULAR 0.008 RCP 4.0 4.1 None 0.2 7.4 7.4 None 11.2 11.3 None 12.9 12.9 None PIPE13825 B ZPIP12621 2.5 0 1 CIRCULAR 0.078 RCP 22.6 22.7 None 0.2 41.8 41.9 None 64.1 66.7 None 73.6 73.6 None PIPE13920 B ZPIP17127 1.5 0 1 CIRCULAR 0.016 RCP 0.9 0.9 None 0.07 7.6 5.6 None 8.4 7.2 None 9.5 8.4 None PIPE13993 B ZPIP15031 2 0 1 CIRCULAR 0.018 RCP 7.0 7.0 None 0.23 11.5 11.5 None 17.2 17.2 None 19.6 19.5 None PIPE14139 B ZPIP11848 2 0 1 CIRCULAR 0.016 RCP 4.4 4.4 None 0.15 9.9 9.9 None 15.9 15.9 None 18.5 18.5 None PIPE13748 B ZPIP12404 1.5 0 1 CIRCULAR 0.037 RCP 4.5 4.5 None 0.22 7.5 7.5 None 11.2 11.2 None 12.7 12.8 None PIPE13879 B ZPIP12677 4 0 1 CIRCULAR 0.275 RCP 193.4 193.1 None 0.26 323.5 333.0 None 480.4 453.2 None 554.4 476.2 None PIPE13934 B ZPIP11404 1.5 0 1 CIRCULAR 0.017 RCP 3.2 3.2 None 0.24 5.2 5.1 None 7.6 7.6 None 8.6 8.6 None PIPE13947 B ZPIP17300 1.5 0 1 CIRCULAR 0.016 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 7.3 None 0.0 8.3 None PIPE14014 B ZPIP15047 3 0 1 CIRCULAR 0.075 RCP 40.7 40.7 None 0.22 68.7 68.0 None 102.5 101.2 None 116.7 115.6 None PIPE13622 B ZPIP16689 1.5 0 1 CIRCULAR 0.056 RCP 5.7 5.7 None 0.23 9.2 9.2 None 13.6 13.6 None 15.4 15.4 None PIPE13623 B ZPIP10003 1.5 0 1 CIRCULAR 0.038 RCP 3.6 3.6 None 0.17 5.8 5.8 None 8.6 9.0 None 9.8 12.7 None PIPE13676 B ZPIP12335 2.5 0 1 CIRCULAR 0.085 RCP 22.6 22.7 None 0.19 41.8 41.9 None 64.2 64.3 None 73.6 73.6 None PIPE13850 B ZPIP12646 2 0 1 CIRCULAR 0.081 RCP 13.9 13.9 None 0.22 22.4 22.4 None 33.1 32.9 None 37.4 39.9 None PIPE14086 B ZPIP15114 3 0 1 CIRCULAR 0.037 RCP 29.3 29.4 None 0.23 49.9 49.9 None 74.7 72.0 None 85.2 79.5 None PIPE13745 B ZPIP10060 2 0 1 CIRCULAR 0.079 RCP 13.8 13.9 None 0.22 22.6 22.6 None 33.4 33.4 None 37.8 37.8 None PIPE13978 B ZPIP11427 3 0 1 CIRCULAR 0.019 RCP 21.0 21.0 None 0.23 33.2 33.2 None 48.3 48.4 None 54.5 54.6 None PIPE14011 B ZPIP11440 2.5 0 1 CIRCULAR 0.057 RCP 19.1 19.2 None 0.2 33.2 33.1 None 50.1 49.4 None 57.0 58.8 None PIPE14076 B ZPIP17355 1.5 0 1 CIRCULAR 0.044 RCP 4.2 4.2 None 0.19 7.6 7.6 None 11.6 11.6 None 13.3 13.3 None PIPE14125 B ZPIP11788 2 0 1 CIRCULAR 0.019 RCP 6.9 6.9 None 0.22 11.1 11.1 None 16.4 16.4 None 18.5 18.5 None PIPE13711 B ZPIP10045 1.5 0 1 CIRCULAR 0.058 RCP 5.6 5.6 None 0.22 9.0 9.0 None 13.2 13.1 None 14.8 14.8 None PIPE14015 B ZPIP15048 3 0 1 CIRCULAR 0.086 RCP 40.7 40.7 None 0.21 68.7 68.0 None 102.5 101.2 None 116.7 115.6 None PIPE13820 B ZPIP10168 1.5 0 1 CIRCULAR 0.030 RCP 3.9 3.9 None 0.21 6.2 6.2 None 9.2 9.2 None 10.4 10.5 None PIPE13931 B ZPIP14977 1.5 0 1 CIRCULAR 0.055 RCP 5.2 5.2 None 0.21 8.5 8.5 None 12.5 12.5 None 14.2 14.2 None PIPE14117 B ZPIP11778 1.5 0 1 CIRCULAR 0.068 RCP 5.3 5.3 None 0.19 8.3 8.4 None 12.1 15.0 None 13.6 16.1 None PIPE13916 B ZPIP10603 2.5 0 1 CIRCULAR 0.037 RCP 15.5 15.6 None 0.2 27.1 27.0 None 40.9 38.2 None 46.7 45.5 None PIPE13938 B ZPIP14983 1.5 0 1 CIRCULAR 0.056 RCP 5.2 5.2 None 0.21 8.5 8.5 None 12.6 12.6 None 14.2 14.3 None PIPE13654 B ZPIP12313 1.5 0 1 CIRCULAR 0.034 RCP 4.2 4.2 None 0.22 6.6 6.6 None 9.5 9.6 None 10.7 10.7 None PIPE13708 B ZPIP12370 2 0 1 CIRCULAR 0.022 RCP 6.9 7.0 None 0.21 11.2 11.1 None 16.4 16.4 None 18.5 18.5 None PIPE13882 B ZPIP10201 2.5 0 1 CIRCULAR 0.024 RCP 11.6 11.7 None 0.18 20.0 20.0 None 30.4 30.5 None 34.8 34.8 None PIPE14037 B ZPIP11451 1.5 0 1 CIRCULAR 0.093 RCP 5.0 5.0 None 0.16 9.6 9.7 None 14.9 15.0 None 17.2 17.2 None PIPE14088 B ZPIP11477 2.5 0 1 CIRCULAR 0.114 RCP 27.8 27.9 None 0.2 47.4 47.1 None 71.0 67.9 None 80.9 75.0 None PIPE14091 B ZPIP15116 1.5 0 1 CIRCULAR 0.063 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 12.3 None 0.0 14.1 Both Upstream and Downstream PIPE13808 B ZPIP12603 2 0 1 CIRCULAR 0.058 RCP 9.4 9.5 None 0.17 16.6 16.7 None 25.2 25.3 None 28.8 28.9 None PIPE13738 B ZPIP10058 2 0 1 CIRCULAR 0.104 RCP 13.9 13.9 None 0.19 22.7 22.7 None 33.5 33.5 None 37.9 37.9 None PIPE13794 B ZPIP12528 4 0 1 CIRCULAR 0.421 RCP 195.7 195.5 None 0.21 327.5 352.4 None 486.5 458.6 None 561.2 482.9 None PIPE13688 B ZPIP12346 1.5 0 1 CIRCULAR 0.065 RCP 5.0 5.0 None 0.19 8.3 8.3 None 12.4 13.7 None 14.1 13.6 Upstream PIPE13692 B ZPIP10036 2 0 1 CIRCULAR 0.079 RCP 10.8 10.9 None 0.17 18.9 18.9 None 28.6 28.6 None 32.7 32.7 None PIPE13932 B ZPIP14978 2.5 0 1 CIRCULAR 0.133 RCP 27.8 27.9 None 0.19 45.6 45.7 None 67.7 67.7 None 76.8 76.7 None PIPE14161 B ZPIP16164 1.5 0 1 CIRCULAR 0.045 RCP 4.3 4.3 None 0.19 6.9 6.9 None 10.1 10.1 None 11.4 11.4 None PIPE13655 B ZPIP12314 1.5 0 1 CIRCULAR 0.139 RCP 7.0 7.0 None 0.18 11.6 11.6 None 17.3 17.3 None 19.7 19.7 None PIPE13683 B ZPIP10029 2 0 1 CIRCULAR 0.043 RCP 9.0 9.1 None 0.19 14.3 14.4 None 21.0 21.0 None 23.7 23.6 None PIPE13744 B ZPIP16710 3 0 1 CIRCULAR 0.030 RCP 18.6 18.7 None 0.16 30.2 30.1 None 44.7 44.4 None 50.5 58.1 None PIPE14030 B ZPIP11448 2 0 1 CIRCULAR 0.011 RCP 4.9 4.9 None 0.2 7.6 7.6 None 11.1 10.4 None 12.6 12.1 None PIPE14132 B ZPIP15735 1.5 0 1 CIRCULAR 0.020 RCP 2.8 2.8 None 0.19 4.5 4.5 None 6.6 6.6 None 7.4 7.4 None PIPE14156 B ZPIP12012 2 0 1 CIRCULAR 0.027 RCP 6.9 6.9 None 0.19 11.1 11.2 None 16.4 16.4 None 18.6 18.6 None PIPE13665 B ZPIP12323 1.5 0 1 CIRCULAR 0.062 RCP 4.8 4.8 None 0.18 7.7 7.7 None 11.4 11.4 None 12.9 12.9 None PIPE13823 B ZPIP12619 1.5 0 1 CIRCULAR 0.109 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 18.2 None 0.0 17.1 Both Upstream and Downstream PIPE13887 B ZPIP12687 2 0 1 CIRCULAR 0.012 RCP 4.6 4.6 None 0.18 7.4 7.4 None 10.8 10.8 None 12.3 12.2 None PIPE13940 B ZPIP14986 1.583 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 1.3 None 0.0 3.9 None 0.0 4.3 None PIPE14057 B ZPIP11461 1.5 0 1 CIRCULAR 0.040 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.9 None 0.0 10.2 Downstream PIPE14150 B ZPIP15831 3 0 1 CIRCULAR 0.095 RCP 28.9 28.9 None 0.14 52.4 51.9 None 79.8 97.1 None 90.6 100.6 Downstream PIPE13686 B ZPIP12344 1.5 0 1 CIRCULAR 0.079 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 14.1 None 0.0 14.1 Both Upstream and Downstream PIPE13732 B ZPIP12391 1.5 0 1 CIRCULAR 0.086 RCP 5.7 5.7 None 0.18 8.9 8.9 None 13.0 13.0 None 14.7 14.7 None PIPE13866 B ZPIP10193 1.5 0 1 CIRCULAR 0.155 RCP 7.3 7.3 None 0.18 11.9 11.8 None 17.6 17.6 None 19.9 19.9 None PIPE13888 B ZPIP10205 2 0 1 CIRCULAR 0.026 RCP 6.5 6.5 None 0.18 10.5 10.5 None 15.6 15.6 None 17.6 17.6 None PIPE13901 B ZPIP10573 1.5 0 1 CIRCULAR 0.063 RCP 4.7 4.7 None 0.18 7.5 7.5 None 11.1 11.0 None 12.5 12.6 None PIPE13907 B ZPIP10586 2.5 0 1 CIRCULAR 0.082 RCP 12.2 12.2 None 0.1 29.3 29.2 None 48.5 47.8 None 57.6 55.7 None PIPE13928 B ZPIP17248 2 0 1 CIRCULAR 0.010 RCP 3.7 3.7 None 0.16 6.1 6.1 None 9.2 9.2 None 10.5 10.5 None PIPE14137 B ZPIP17573 3 0 1 CIRCULAR 0.010 RCP 8.0 8.0 None 0.12 16.0 16.6 None 25.1 26.5 None 30.2 31.0 None PIPE13648 B ZPIP12309 2.5 0 1 CIRCULAR 0.023 RCP 9.2 9.2 None 0.15 15.9 15.8 None 24.0 23.9 None 27.2 28.5 None PIPE13685 B ZPIP10031 2 0 1 CIRCULAR 0.104 RCP 13.0 13.1 None 0.18 20.6 20.6 None 30.1 30.1 None 33.9 33.9 None PIPE13709 B ZPIP12371 2 0 1 CIRCULAR 0.041 RCP 8.4 8.5 None 0.18 13.5 13.5 None 20.0 19.9 None 22.6 21.1 None PIPE13746 B ZPIP10061 2 0 1 CIRCULAR 0.073 RCP 10.4 10.4 None 0.17 16.9 16.9 None 25.0 25.0 None 28.3 28.3 None PIPE13693 B ZPIP10037 2.5 0 1 CIRCULAR 0.066 RCP 15.9 15.9 None 0.15 27.3 27.4 None 41.2 41.3 None 47.0 47.1 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 69 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13961 B ZPIP11420 1.5 0 1 CIRCULAR 0.035 RCP 2.2 2.2 None 0.11 4.7 4.7 None 7.5 7.5 None 8.7 8.7 None PIPE14009 B ZPIP17329 2 0 1 CIRCULAR 0.022 RCP 4.9 4.9 None 0.15 8.7 8.7 None 13.3 13.3 None 15.2 15.2 None PIPE14074 B ZPIP11468 2 0 1 CIRCULAR 0.111 RCP 4.0 4.0 None 0.05 6.3 6.3 None 9.2 15.5 None 10.4 34.0 None PIPE14085 B ZPIP15113 1.5 0 1 CIRCULAR 0.318 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 14.7 None 0.0 26.7 Both Upstream and Downstream PIPE13741 B ZPIP12399 2.5 0 1 CIRCULAR 0.005 RCP 4.0 4.0 None 0.14 7.3 7.3 None 11.2 11.2 None 12.8 12.8 None PIPE13816 B ZPIP12612 1.5 0 1 CIRCULAR 0.091 RCP 1.6 1.6 None 0.05 2.5 2.5 None 3.6 14.2 None 4.1 14.1 Both Upstream and Downstream PIPE13837 B ZPIP12633 5 0 1 CIRCULAR 0.314 RCP 242.8 241.1 None 0.17 420.6 412.1 None 637.6 600.2 None 736.2 639.3 None PIPE13881 B ZPIP10200 3 0 1 CIRCULAR 0.014 RCP 11.7 11.7 None 0.15 20.1 20.1 None 30.6 30.6 None 34.9 35.0 None PIPE13671 B ZPIP12327 3 0 1 CIRCULAR 0.051 RCP 24.7 24.8 None 0.16 39.3 39.5 None 57.5 57.7 None 64.9 65.1 None PIPE14104 B ZPIP11484 2.5 0 1 CIRCULAR 0.013 RCP 7.8 7.9 None 0.17 12.4 12.2 None 18.0 17.1 None 20.4 19.9 None PIPE14036 B ZPIP11450 1.5 0 1 CIRCULAR 0.151 RCP 5.0 5.0 None 0.12 9.7 9.7 None 15.0 15.0 None 17.2 17.2 None PIPE14103 B ZPIP11482 2.5 0 1 CIRCULAR 0.014 RCP 7.9 7.9 None 0.16 12.4 12.2 None 18.0 17.2 None 20.4 19.9 None PIPE14113 B ZPIP17394 1.5 0 1 CIRCULAR 0.020 RCP 2.3 2.3 None 0.16 3.7 3.7 None 5.5 5.5 None 6.2 6.2 None FLOW10048 B 5 10 1 TRAPEZOIDAL 0.005 EARTHEN 67.4 28.8 None 0.08 41.7 51.0 None 63.4 148.8 None 74.2 150.7 None PIPE13621 B ZPIP16688 1.5 0 1 CIRCULAR 0.022 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 6.4 None PIPE13805 B ZPIP10142 2 0 1 CIRCULAR 0.110 RCP 6.9 6.9 None 0.09 11.4 11.4 None 17.0 22.2 None 19.3 30.9 None PIPE13843 B ZPIP12640 5 0 1 CIRCULAR 0.390 RCP 255.6 253.6 None 0.16 443.2 435.0 None 673.0 613.7 Downstream 777.1 670.4 Downstream PIPE14112 B ZPIP15133 5 0 1 CIRCULAR 0.035 RCP 50.5 51.0 None 0.1 92.8 106.5 None 145.4 185.9 Upstream 168.8 200.6 Upstream PIPE13864 B ZPIP12665 1.5 0 1 CIRCULAR 0.223 RCP 7.3 7.3 None 0.15 11.9 11.9 None 17.6 17.6 None 19.9 19.9 None PIPE13994 B ZPIP17322 2.5 0 1 CIRCULAR 0.014 RCP 7.0 7.0 None 0.14 11.5 11.6 None 17.3 17.3 None 19.6 19.6 None PIPE13996 B ZPIP11434 1.5 0 1 CIRCULAR 0.534 RCP 10.7 10.7 None 0.14 17.5 17.5 None 26.1 26.2 None 29.7 30.5 None PIPE13826 B ZPIP12622 2.5 0 1 CIRCULAR 0.085 RCP 15.8 15.9 None 0.13 27.3 27.4 None 41.2 41.3 None 47.0 47.1 None PIPE13856 B ZPIP12655 2 0 1 CIRCULAR 0.063 RCP 6.8 6.8 None 0.12 12.6 12.5 None 19.2 19.2 None 22.0 22.0 None PIPE14034 B ZPIP17341 1.583 0 1 CIRCULAR 0.136 RCP 5.1 5.1 None 0.11 9.7 9.7 None 15.0 15.0 None 17.3 17.3 None PIPE13649 B ZPIP12310 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.7 None 0.0 2.8 None PIPE13773 B ZPIP16711 2 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.1 None 0.0 0.9 None 0.0 12.6 None PIPE13897 B ZPIP13390 3 0 1 CIRCULAR 0.133 RCP 34.0 34.1 None 0.14 57.7 57.0 None 86.6 83.0 None 98.5 92.8 None PIPE13935 B ZPIP11405 2 0 1 CIRCULAR 0.010 RCP 3.2 3.2 None 0.14 5.1 5.1 None 7.6 7.5 None 8.5 8.5 None PIPE14101 B ZPIP15125 1.5 0 1 CIRCULAR 0.016 RCP 2.0 2.0 None 0.15 3.1 3.1 None 4.5 4.5 None 5.0 5.0 None PIPE13666 B ZPIP10020 2 0 1 CIRCULAR 0.060 RCP 7.7 7.7 None 0.14 12.3 12.3 None 18.0 18.0 None 20.3 20.3 None PIPE13839 B ZPIP12635 5 0 1 CIRCULAR 0.437 RCP 238.9 237.6 None 0.14 414.0 410.8 None 626.0 587.3 None 723.3 636.1 Downstream PIPE13851 B ZPIP12647 1.5 0 1 CIRCULAR 0.106 RCP 4.0 4.0 None 0.12 6.6 6.6 None 9.8 9.8 None 11.2 12.7 None PIPE14017 B ZPIP17332 1.5 0 1 CIRCULAR 0.061 RCP 3.4 3.4 None 0.13 5.6 5.6 None 8.2 8.2 None 9.3 9.3 None PIPE14072 B ZPIP11466 1.5 0 1 CIRCULAR 0.085 RCP 4.0 4.0 None 0.13 6.3 6.3 None 9.2 9.2 None 10.4 10.9 None PIPE14123 B ZPIP17526 1.5 0 1 CIRCULAR 0.030 RCP 2.5 2.5 None 0.14 4.0 4.0 None 5.8 5.8 None 6.6 6.6 None PIPE14138 B ZPIP11847 2.5 0 1 CIRCULAR 0.015 RCP 4.3 4.3 None 0.08 9.8 9.9 None 15.8 15.8 None 18.5 18.4 None PIPE13733 B ZPIP12392 1.5 0 1 CIRCULAR 0.085 RCP 4.2 4.2 None 0.14 6.6 6.6 None 9.6 9.6 None 10.8 10.8 None PIPE13779 B ZPIP10087 2 0 1 CIRCULAR 0.026 RCP 4.5 4.5 None 0.12 7.4 7.4 None 11.2 11.2 None 12.7 12.7 None PIPE14038 B ZPIP15065 1.5 0 1 CIRCULAR 0.072 RCP 3.6 3.6 None 0.13 5.6 5.7 None 8.2 8.3 None 9.2 9.7 None PIPE14069 B ZPIP17349 2.5 0 1 CIRCULAR 0.066 RCP 12.0 12.0 None 0.11 21.3 21.3 None 32.4 32.4 None 37.0 37.0 None PIPE13629 B ZPIP16692 3 0 1 CIRCULAR 0.088 RCP 23.0 23.0 None 0.12 38.9 38.9 None 58.4 58.4 None 66.3 66.5 None PIPE13640 B ZPIP16697 1.5 0 1 CIRCULAR 0.097 RCP 2.9 2.9 None 0.09 6.1 6.1 None 9.6 9.5 None 11.1 11.0 None PIPE13659 B ZPIP10019 2 0 1 CIRCULAR 0.040 RCP 2.6 2.6 None 0.06 7.4 7.4 None 12.9 12.9 None 15.2 15.2 None PIPE13726 B ZPIP12387 1.5 0 1 CIRCULAR 0.041 RCP 2.6 2.6 None 0.12 4.2 4.2 None 6.3 6.3 None 7.2 7.2 None PIPE13893 B ZPIP13242 3 0 1 CIRCULAR 0.253 RCP 48.9 48.9 None 0.15 79.1 78.3 None 117.0 109.1 Downstream 132.5 114.0 Downstream PIPE13898 B ZPIP13391 3.5 0 1 CIRCULAR 0.170 RCP 50.6 50.6 None 0.12 84.6 83.8 None 126.5 125.6 None 143.7 140.9 None PIPE13673 B ZPIP12329 2 0 1 CIRCULAR 0.075 RCP 7.6 7.7 None 0.12 12.2 12.3 None 17.9 18.0 None 20.3 20.3 None PIPE13757 B ZPIP12415 1.5 0 1 CIRCULAR 0.116 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 2.7 None 0.0 11.9 Downstream PIPE13854 B ZPIP10185 2 0 1 CIRCULAR 0.128 RCP 10.3 10.3 None 0.13 16.3 16.3 None 23.8 23.8 None 26.9 26.9 None PIPE13977 B ZPIP11426 3 0 1 CIRCULAR 0.061 RCP 21.0 21.0 None 0.13 33.2 33.2 None 48.3 48.5 None 54.5 54.7 None PIPE14022 B ZPIP11445 1.5 0 1 CIRCULAR 0.064 RCP 2.2 2.2 None 0.08 3.5 3.5 None 5.1 5.1 None 5.7 8.7 None PIPE14180 B PIP16878 3 0 1 CIRCULAR 0.040 RCP 16.2 16.2 None 0.12 26.4 26.4 None 39.3 39.2 None 44.6 44.5 None PIPE13643 B ZPIP10012 3.5 0 1 CIRCULAR 0.048 RCP 24.5 24.5 None 0.11 41.3 41.4 None 61.9 61.8 None 70.3 70.3 None PIPE13976 B ZPIP17318 3 0 1 CIRCULAR 0.065 RCP 20.9 21.0 None 0.12 33.2 33.2 None 48.2 48.5 None 54.4 54.7 None PIPE13739 B ZPIP12397 2.5 0 1 CIRCULAR 0.010 RCP 3.9 4.0 None 0.1 7.3 7.3 None 11.2 11.2 None 12.8 12.8 None PIPE13783 B ZPIP10105 2 0 1 CIRCULAR 0.009 RCP 2.3 2.3 None 0.11 3.8 3.8 None 5.7 5.7 None 6.5 6.5 None PIPE13950 B ZPIP11413 1.5 0 1 CIRCULAR 0.235 RCP 6.0 6.0 None 0.12 9.6 9.6 None 14.2 14.2 None 16.1 16.0 None PIPE13962 B ZPIP11421 2 0 1 CIRCULAR 0.029 RCP 3.0 3.0 None 0.08 6.5 6.6 None 10.5 10.5 None 12.1 12.1 None PIPE14019 B ZPIP17334 3 0 1 CIRCULAR 0.391 RCP 46.3 46.2 None 0.11 77.5 76.8 None 115.4 114.6 None 131.3 131.3 None PIPE13632 B ZPIP10008 3 0 1 CIRCULAR 0.104 RCP 22.0 22.1 None 0.1 37.4 37.5 None 56.2 56.2 None 63.8 64.0 None PIPE13658 B ZPIP10018 3 0 1 CIRCULAR 0.093 RCP 23.0 23.1 None 0.11 36.6 36.7 None 53.5 53.6 None 60.4 60.5 None PIPE14023 B ZPIP15053 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 2.1 None 0.0 4.0 None PIPE14084 B ZPIP15112 1.5 0 1 CIRCULAR 0.080 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 11.0 None 0.0 9.0 Both Upstream and Downstream PIPE13782 B ZPIP12488 2 0 1 CIRCULAR 0.010 RCP 2.3 2.3 None 0.1 3.8 3.8 None 5.7 5.7 None 6.5 6.6 None PIPE13786 B ZPIP10122 2 0 1 CIRCULAR 0.077 RCP 6.0 6.0 None 0.1 10.4 10.4 None 15.8 15.8 None 18.1 18.1 None PIPE13858 B ZPIP12658 1.5 0 1 CIRCULAR 0.100 RCP 2.3 2.3 None 0.07 3.5 3.5 None 5.1 10.3 None 5.7 9.7 None PIPE13868 B ZPIP12667 2 0 1 CIRCULAR 0.109 RCP 6.9 6.9 None 0.09 11.4 11.4 None 17.0 17.0 None 19.3 21.3 None PIPE13942 B ZPIP14990 2.5 0 1 CIRCULAR 0.361 RCP 22.6 22.6 None 0.09 41.5 41.4 None 63.2 62.8 None 72.3 70.3 None PIPE13964 B ZPIP15010 2 0 1 CIRCULAR 0.032 RCP 4.2 4.2 None 0.11 6.9 7.0 None 10.3 10.3 None 11.7 11.7 None PIPE14148 B ZPIP11852 3 0 1 CIRCULAR 0.278 RCP 28.9 28.9 None 0.08 52.4 51.9 None 79.7 90.3 None 90.5 103.7 None PIPE14043 B ZPIP17345 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.1 None 0.0 2.8 None PIPE14082 B ZPIP11475 2 0 1 CIRCULAR 0.076 RCP 5.7 5.8 None 0.09 10.0 10.1 None 15.1 14.8 Downstream 17.2 17.5 Downstream PIPE13697 B ZPIP12361 1.5 0 1 CIRCULAR 0.019 RCP 1.5 1.5 None 0.1 2.4 2.4 None 3.5 3.5 None 4.0 4.0 None PIPE13729 B ZPIP10053 3 0 1 CIRCULAR 0.402 RCP 48.8 48.9 None 0.12 79.1 78.3 None 117.0 108.6 None 132.5 114.1 None PIPE13750 B ZPIP12409 1.5 0 1 CIRCULAR 0.093 RCP 3.3 3.3 None 0.1 5.2 5.3 None 7.7 7.7 None 8.7 8.8 None PIPE13930 B ZPIP14976 1.5 0 1 CIRCULAR 0.097 RCP 3.1 3.1 None 0.1 5.2 5.2 None 7.7 7.7 None 8.7 8.7 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 70 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14126 B ZPIP11789 2 0 1 CIRCULAR 0.091 RCP 6.9 6.9 None 0.1 11.1 11.1 None 16.4 16.4 None 18.5 18.5 None PIPE14133 B ZPIP15736 1.5 0 1 CIRCULAR 0.010 RCP 1.1 1.1 None 0.1 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None PIPE13804 B ZPIP12563 2 0 1 CIRCULAR 0.106 RCP 6.9 6.9 None 0.09 11.4 11.4 None 17.0 17.0 None 19.3 19.3 None PIPE13900 B ZPIP10572 2 0 1 CIRCULAR 0.043 RCP 4.6 4.6 None 0.1 7.5 7.4 None 11.0 10.9 None 12.4 12.2 None PIPE13929 B ZPIP14975 1.5 0 1 CIRCULAR 0.021 RCP 1.3 1.3 None 0.09 2.3 2.3 None 3.5 3.5 None 4.0 4.0 None PIPE14127 B ZPIP15716 1.5 0 1 CIRCULAR 0.033 RCP 1.9 1.9 None 0.1 3.0 3.0 None 4.4 4.4 None 5.0 5.0 None PIPE13624 B ZPIP10004 1.5 0 1 CIRCULAR 0.110 RCP 3.2 3.2 None 0.09 5.2 5.2 None 7.6 7.7 None 8.6 8.7 None PIPE13664 B ZPIP12322 4 0 1 CIRCULAR 0.063 RCP 29.8 29.9 None 0.08 53.4 53.6 None 81.2 80.6 None 93.0 91.6 None PIPE13730 B ZPIP10055 1.5 0 1 CIRCULAR 0.077 RCP 2.0 2.0 None 0.07 4.1 4.1 None 6.4 6.4 None 7.4 7.4 None PIPE13651 B ZPIP10015 5 0 1 CIRCULAR 0.387 RCP 148.6 149.2 None 0.09 252.9 249.2 None 379.8 345.6 None 432.9 392.7 None PIPE13963 B ZPIP11422 2 0 1 CIRCULAR 0.050 RCP 3.0 3.0 None 0.06 6.5 6.6 None 10.4 10.4 None 12.1 12.1 None PIPE14092 B ZPIP15117 1.5 0 1 CIRCULAR 0.119 RCP 2.0 2.0 None 0.06 4.7 4.7 None 7.6 7.6 None 8.9 8.9 None PIPE13627 B ZPIP16690 2.5 0 1 CIRCULAR 0.009 RCP 3.2 3.2 None 0.09 5.2 5.2 None 7.7 7.7 None 8.9 8.8 None PIPE13677 B ZPIP10027 1.5 0 1 CIRCULAR 0.065 RCP 1.2 1.2 None 0.04 3.2 3.2 None 5.3 5.3 None 6.2 6.2 None PIPE13740 B ZPIP12398 2 0 1 CIRCULAR 0.020 RCP 2.0 2.0 None 0.06 4.0 4.1 None 6.3 6.3 None 7.3 7.3 None PIPE13845 B ZPIP10180 2 0 1 CIRCULAR 0.320 RCP 11.0 11.0 None 0.09 17.6 17.6 None 25.8 25.8 None 29.2 29.2 Downstream PIPE13883 B ZPIP12678 2 0 1 CIRCULAR 0.105 RCP 5.2 5.2 None 0.07 9.5 9.5 None 14.9 14.9 None 17.2 17.2 None PIPE13890 B ZPIP16882 1.5 0 1 CIRCULAR 0.285 RCP 4.7 4.7 None 0.08 7.5 7.5 None 11.0 11.0 None 12.5 12.9 None PIPE13958 B ZPIP15005 3 0 1 CIRCULAR 0.097 RCP 18.4 18.5 None 0.09 29.2 29.2 None 42.5 42.7 None 48.0 48.2 None PIPE14077 B ZPIP11470 2 0 1 CIRCULAR 0.065 RCP 4.1 4.1 None 0.07 7.6 7.6 None 11.5 11.5 None 13.2 13.2 None PIPE14176 B ZPIP17831 1.5 0 1 CIRCULAR 0.065 RCP 1.2 1.2 None 0.04 3.2 3.2 None 5.3 5.3 None 6.2 6.2 None PIPE13886 B ZPIP12686 2 0 1 CIRCULAR 0.062 RCP 4.6 4.6 None 0.08 7.4 7.4 None 10.8 10.8 None 12.2 12.2 None PIPE14098 B ZPIP15121 5 0 1 CIRCULAR 0.698 RCP 187.2 186.3 None 0.09 317.6 318.7 None 474.9 443.8 None 545.4 480.0 None PIPE14140 B ZPIP11849 1.5 0 1 CIRCULAR 0.020 RCP 1.3 1.3 None 0.09 2.0 2.0 None 2.9 2.9 None 3.2 3.2 None PIPE14178 B ZPIP17903 5 10 1 TRAPEZOIDAL 0.076 RCP 139.3 135.6 None 0.1 279.3 230.8 None 445.8 285.8 None 525.0 305.8 None PIPE13638 B ZPIP10010 5 0 1 CIRCULAR 0.500 RCP 148.6 149.2 None 0.08 252.9 249.2 None 379.8 345.6 None 432.9 392.7 None PIPE13857 B ZPIP12656 2 0 1 CIRCULAR 0.018 RCP 2.4 2.4 None 0.08 3.9 3.9 None 5.7 5.7 None 6.5 6.5 None PIPE13880 B ZPIP10199 3 0 1 CIRCULAR 0.060 RCP 11.7 11.7 None 0.07 19.9 20.1 None 29.8 30.6 None 34.2 35.0 None PIPE13885 B ZPIP10204 2 0 1 CIRCULAR 0.064 RCP 4.5 4.6 None 0.08 7.3 7.3 None 10.8 10.8 None 12.2 12.2 None PIPE13937 B ZPIP14982 1.5 0 1 CIRCULAR 0.049 RCP 1.8 1.8 None 0.08 2.9 2.9 None 4.3 4.3 None 4.8 4.8 None PIPE13968 B ZPIP17314 2 0 1 CIRCULAR 0.061 RCP 4.3 4.3 None 0.08 7.1 7.1 None 10.4 10.4 None 11.8 11.8 None PIPE14118 B ZPIP11779 1.5 0 1 CIRCULAR 0.054 RCP 2.0 2.0 None 0.08 3.1 3.1 None 4.5 4.6 None 5.1 5.2 None PIPE13630 B ZPIP10006 1.5 0 1 CIRCULAR 0.045 RCP 1.7 1.7 None 0.07 2.7 2.7 None 4.0 4.0 None 4.5 4.5 None PIPE13699 B ZPIP16699 1.5 0 1 CIRCULAR 0.037 RCP 1.5 1.5 None 0.08 2.4 2.4 None 3.5 3.5 None 4.0 4.0 None PIPE13966 B ZPIP17312 3 0 1 CIRCULAR 0.056 RCP 12.0 12.0 None 0.08 19.0 19.1 None 27.8 27.9 None 31.4 31.4 None PIPE14183 B ZPIP14988 2 0 1 CIRCULAR 0.399 RCP 9.5 9.3 None 0.07 16.6 15.8 None 25.0 25.2 None 28.5 28.2 None DTCH10438 B 1 0 1 IRREGULAR 0.114 Concrete 74.9 75.1 None 0.04 185.4 186.0 None 309.9 310.8 None 362.4 363.4 None PIPE13762 B ZPIP12420 2 0 1 CIRCULAR 0.208 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 22.1 None 0.0 19.6 None PIPE13817 B ZPIP12613 2 0 1 CIRCULAR 0.181 RCP 6.9 6.9 None 0.07 11.1 11.1 None 16.4 16.4 None 18.5 18.5 None PIPE13918 B ZPIP14231 2.5 0 1 CIRCULAR 0.241 RCP 15.4 15.4 None 0.08 25.1 25.0 None 37.1 36.5 None 42.1 39.0 None PIPE13668 B ZPIP10022 4 0 1 CIRCULAR 0.127 RCP 29.8 29.9 None 0.06 53.4 53.6 None 81.2 80.6 None 93.0 91.6 None PIPE13800 B ZPIP10126 3 0 1 CIRCULAR 0.308 RCP 24.7 24.8 None 0.07 39.3 39.4 None 57.5 57.6 None 64.8 64.9 None PIPE13849 B ZPIP12645 2 0 1 CIRCULAR 0.045 RCP 3.2 3.2 None 0.07 5.2 5.2 None 7.6 7.7 None 8.6 8.7 None PIPE13877 B ZPIP12675 2 0 1 CIRCULAR 0.518 RCP 11.0 11.0 None 0.07 17.6 17.6 None 25.8 25.8 None 29.2 29.2 None PIPE13960 B ZPIP17310 3 0 1 CIRCULAR 0.100 RCP 14.8 14.8 None 0.07 23.5 23.5 None 34.2 34.4 None 38.6 38.8 None PIPE13969 B ZPIP11423 2.5 0 1 CIRCULAR 0.060 RCP 5.1 5.1 None 0.05 10.0 10.0 None 15.6 15.6 None 17.9 17.9 None PIPE14135 B ZPIP17539 1.5 0 1 CIRCULAR 0.026 RCP 1.2 1.2 None 0.07 1.8 1.8 None 2.7 2.7 None 3.0 3.0 None PIPE13669 B ZPIP12325 4 0 1 CIRCULAR 0.195 RCP 36.0 36.1 None 0.06 63.7 63.8 None 96.4 95.8 None 110.4 109.1 None PIPE13678 B ZPIP10028 1.5 0 1 CIRCULAR 0.118 RCP 1.2 1.2 None 0.03 3.2 3.2 None 5.3 5.3 None 6.2 6.2 None PIPE13716 B ZPIP16702 1.5 0 1 CIRCULAR 0.074 RCP 1.9 1.9 None 0.07 3.0 3.0 None 4.4 4.4 None 5.0 5.0 None PIPE13832 B ZPIP12626 1.5 0 1 CIRCULAR 0.077 RCP 1.3 1.3 None 0.04 2.0 2.0 None 2.9 5.0 None 3.2 4.9 None PIPE13899 B ZPIP10571 3 0 1 CIRCULAR 0.061 RCP 10.1 10.2 None 0.06 16.5 16.4 None 24.4 24.3 None 27.7 27.6 None PIPE13919 B ZPIP14232 2.5 0 1 CIRCULAR 0.299 RCP 15.4 15.4 None 0.07 25.0 25.0 None 37.1 36.5 None 42.1 39.0 None PIPE14131 B ZPIP11800 1.5 0 1 CIRCULAR 0.060 RCP 1.7 1.7 None 0.07 2.7 2.7 None 4.0 4.0 None 4.5 4.5 None CHAN10482 B CH035D 0 0 1 IRREGULAR 0.012 Earthen 661.8 675.2 None 0.08 1140.4 1059.0 None 1591.8 1384.0 None 1738.4 1498.4 None PIPE13921 B ZPIP17128 2 0 1 CIRCULAR 0.030 RCP 2.1 1.2 None 0.03 42.4 5.0 None 44.3 6.0 None 37.8 6.3 None PIPE13924 B ZPIP14770 2.5 0 1 CIRCULAR 0.354 RCP 15.4 15.4 None 0.06 25.1 25.0 None 37.1 36.5 None 42.1 39.0 None PIPE13967 B ZPIP17313 3 0 1 CIRCULAR 0.101 RCP 13.1 13.2 None 0.06 20.9 20.9 None 30.4 30.5 None 34.3 34.4 None PIPE14081 B ZPIP11474 2 0 1 CIRCULAR 0.014 RCP 1.6 1.6 None 0.06 2.5 2.5 None 3.6 3.6 None 4.1 4.4 None PIPE13682 B ZPIP12341 2 0 1 CIRCULAR 0.195 CMP 3.1 3.1 None 0.06 5.0 5.0 None 7.4 7.4 None 8.3 8.3 None PIPE13809 B ZPIP12604 1.5 0 1 CIRCULAR 0.054 RCP 1.4 1.4 None 0.06 2.3 2.3 None 3.3 3.3 None 3.8 3.8 None PIPE13663 B ZPIP12321 3 0 1 CIRCULAR 0.532 RCP 20.9 20.9 None 0.04 38.6 38.8 None 59.3 58.9 None 68.1 66.9 None PIPE13787 B ZPIP12523 2 0 1 CIRCULAR 0.156 RCP 4.5 4.5 None 0.05 7.4 7.4 None 11.2 11.2 None 12.7 12.8 None PIPE13821 B ZPIP10170 1.5 0 1 CIRCULAR 0.039 RCP 1.2 1.2 None 0.06 1.8 1.8 None 2.6 2.6 None 3.0 3.0 None PIPE13855 B ZPIP12648 2 0 1 CIRCULAR 0.749 RCP 10.3 10.3 None 0.05 16.3 16.3 None 23.8 23.8 None 26.9 26.9 None PIPE13948 B ZPIP17302 1.5 0 1 CIRCULAR 0.369 RCP 3.3 3.3 None 0.05 5.3 5.3 None 7.8 7.8 None 8.9 8.8 None PIPE13972 B ZPIP15016 3 0 1 CIRCULAR 0.528 RCP 20.9 20.9 None 0.04 38.6 38.8 None 59.3 58.9 None 68.0 66.9 None PIPE14115 B ZPIP15696 1.5 0 1 CIRCULAR 0.026 RCP 0.9 0.9 None 0.05 1.4 1.4 None 2.0 2.0 None 2.3 2.3 None PIPE13778 B ZPIP12443 2 0 1 CIRCULAR 0.048 RCP 2.3 2.3 None 0.05 3.8 3.8 None 5.8 5.8 None 6.6 6.6 None PIPE13780 B ZPIP12469 2 0 1 CIRCULAR 0.048 RCP 2.3 2.3 None 0.05 3.8 3.8 None 5.7 5.7 None 6.5 6.6 None PIPE13784 B ZPIP10107 2 0 1 CIRCULAR 0.049 RCP 2.3 2.3 None 0.05 3.8 3.8 None 5.7 5.7 None 6.5 6.5 None PIPE13811 B ZPIP16720 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 1.6 None PIPE13884 B ZPIP12680 2.5 0 1 CIRCULAR 0.065 RCP 4.5 4.6 None 0.04 7.3 7.3 None 10.8 10.8 None 12.2 12.2 None PIPE13965 B ZPIP15011 3 0 1 CIRCULAR 0.034 RCP 5.5 5.5 None 0.04 8.7 8.7 None 12.7 12.7 None 14.3 14.3 None PIPE14175 B ZPIP17830 1.5 0 1 CIRCULAR 0.247 RCP 1.2 1.2 None 0.02 3.2 3.2 None 5.3 5.3 None 6.2 6.2 None CHAN10483 B CH035D 0 0 1 IRREGULAR 0.007 Earthen 727.2 744.0 None 0.06 1117.7 1048.1 None 1574.3 1375.6 None 1655.4 1492.9 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 71 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13941 B ZPIP14987 1.5 0 1 CIRCULAR 0.271 RCP 1.9 1.9 None 0.03 3.4 3.4 None 5.2 5.2 None 5.9 5.9 None PIPE14153 B ZPIP15834 2 0 1 CIRCULAR 0.224 RCP 4.1 4.1 None 0.04 6.7 6.7 None 10.1 10.1 None 11.4 11.4 None PIPE13680 B ZPIP12339 2 0 1 CIRCULAR 0.129 RCP 3.1 3.1 None 0.04 5.0 5.0 None 7.4 8.0 None 8.3 8.3 None PIPE14134 B ZPIP17538 1.5 0 1 CIRCULAR 0.052 RCP 0.9 0.9 None 0.04 1.4 1.4 None 2.0 2.0 None 2.3 2.3 None PIPE14136 B ZPIP17572 2 0 1 CIRCULAR 0.027 RCP 1.3 1.3 None 0.03 2.0 2.0 None 2.8 2.8 None 3.2 3.2 None CHAN10481 B CH035D 0 0 1 IRREGULAR 0.012 Earthen 680.7 690.9 None 0.04 1152.0 1063.9 None 1598.4 1386.4 None 1743.5 1500.0 None PIPE13788 B ZPIP12524 2 0 1 CIRCULAR 0.448 RCP 4.5 4.5 None 0.03 7.4 7.4 None 11.2 11.2 None 12.7 12.8 None PIPE14068 B ZPIP15091 2 0 1 CIRCULAR 0.068 RCP 1.6 1.6 None 0.03 2.5 2.5 None 3.7 3.7 None 4.2 5.0 None PIPE14080 B ZPIP17358 2 0 1 CIRCULAR 0.048 RCP 1.6 1.6 None 0.03 2.5 2.5 None 3.6 3.6 None 4.1 4.1 None PIPE14177 B ZPIP17902 5 10 1 TRAPEZOIDAL 0.109 RCP 50.6 50.6 None 0.03 84.6 83.8 None 126.5 125.6 None 143.7 140.8 None CHAN10480 B CH035D 0 0 1 IRREGULAR 0.021 Earthen 673.0 686.5 None 0.04 1155.3 1065.3 None 1600.6 1387.4 None 1745.9 1500.5 None PIPE14075 B ZPIP11469 1.5 0 1 CIRCULAR 0.285 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 6.0 None 0.0 4.0 None PIPE13635 B ZPIP16694 1.5 0 1 CIRCULAR 0.084 RCP 0.4 0.4 None 0.01 0.9 0.9 None 1.5 1.5 None 1.7 1.7 None PIPE13859 B ZPIP12659 1.5 0 1 CIRCULAR 0.115 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 2.3 None 0.0 2.2 None CHAN10603 B CH035D 0 0 1 IRREGULAR 0.037 Earthen 675.0 688.4 None 0.03 1155.1 1065.2 None 1600.6 1387.3 None 1745.8 1500.5 None CHAN10622 B CH035D 0 0 1 IRREGULAR 0.133 Earthen 676.7 686.8 Downstream 0.02 1677.2 1781.9 Downstream 1672.6 1808.8 Downstream 1700.8 1811.6 Downstream PIPE13681 B ZPIP12340 2 0 1 CIRCULAR 0.497 RCP 3.1 3.1 None 0.02 5.0 5.0 None 7.4 7.4 None 8.3 8.3 None PIPE13861 B ZPIP10190 1.5 0 1 CIRCULAR 0.185 RCP 0.8 1.6 None 0.03 1.3 1.7 None 2.1 2.2 None 2.3 2.4 None FLOW10049 B 5 10 1 TRAPEZOIDAL 0.124 EARTHEN 75.1 75.1 None 0.01 186.1 186.2 None 311.5 311.7 None 364.2 364.4 None CHAN10529 B 1 0 1 IRREGULAR 0.030 EARTHEN 124.1 124.6 None 0.02 235.4 230.4 None 369.2 361.2 None 425.3 416.9 None CHAN10540 B 0 0 1 IRREGULAR 0.020 Earthen 95.0 95.3 None 0.02 172.5 172.6 None 260.9 260.8 None 298.0 298.3 None PIPE13660 B ZPIP12318 3 0 1 CIRCULAR 0.358 RCP 2.6 2.6 None 0.01 7.4 7.4 None 12.9 12.9 None 15.2 15.2 None PIPE14154 B ZPIP16077 1.5 0 1 CIRCULAR 0.333 RCP 0.8 0.8 None 0.01 1.3 1.3 None 1.9 1.9 None 2.1 2.1 None CHAN10496 B CH035K 0 0 1 IRREGULAR 0.016 Earthen 624.0 624.2 None 0.02 1080.2 907.4 None 1643.4 1146.8 None 1823.1 1233.4 None CHAN10616 B CH035K 0 0 1 IRREGULAR 0.010 Earthen 624.8 624.7 None 0.02 1081.7 907.7 None 1648.7 1147.1 None 1890.7 1239.9 None PIPE13975 B ZPIP17316 3 0 1 CIRCULAR 0.073 RCP 1.9 1.9 None 0.01 3.0 3.0 None 4.3 4.3 None 4.8 4.8 None PIPE14006 B ZPIP15042 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.2 None 0.0 0.3 None PIPE14174 B ZPIP17828 1.5 0 1 CIRCULAR 0.411 RCP 0.4 0.4 None 0.01 0.9 0.9 None 1.5 1.5 None 1.7 1.7 None CHAN10495 B CH035K 0 0 1 IRREGULAR 0.007 Earthen 625.0 624.9 None 0.02 1081.5 907.7 None 1647.7 1147.1 None 1884.6 1241.3 None CHAN10601 B CH035E 0 0 1 IRREGULAR 0.013 Earthen 650.1 662.3 None 0.01 1108.1 1016.3 Upstream 1525.9 1317.8 Upstream 1660.0 1423.8 Upstream CHAN10617 B CH035J 0 0 1 IRREGULAR 0.056 Earthen 631.4 632.4 None 0.02 1093.3 920.0 None 1648.4 1163.1 None 1684.6 1227.4 None PIPE13910 B ZPIP13421 1.5 0 1 CIRCULAR 0.233 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 1.0 None PIPE13973 B ZPIP15017 3 0 1 CIRCULAR 0.171 RCP 1.9 1.9 None 0.01 3.0 3.0 None 4.3 4.3 None 4.9 4.9 None PIPE13986 B ZPIP17321 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.2 None PIPE14152 B ZPIP15833 2 0 1 CIRCULAR 0.012 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.4 None CHAN10478 B CH035E 0 0 1 IRREGULAR 0.036 Earthen 649.8 662.0 None 0.01 1107.7 1016.1 None 1525.7 1317.6 None 1659.9 1423.6 None CHAN10487 B CH035C 0 0 1 IRREGULAR 0.032 Earthen 657.5 669.8 None 0.01 1121.7 1030.3 None 1547.3 1337.4 None 1684.7 1445.5 None CHAN10490 B CH035C 0 0 1 IRREGULAR 0.020 Earthen 654.3 666.7 None 0.01 1118.4 1028.9 None 1545.4 1336.6 None 1683.2 1445.0 None CHAN10494 B CH035J 0 0 1 IRREGULAR 0.094 Earthen 591.6 601.2 Downstream 0.01 987.2 889.5 Downstream 1340.9 1132.6 Downstream 1434.9 1214.5 Downstream CHAN10497 B CH035B 0 0 1 IRREGULAR 0.044 Earthen 618.4 616.9 None 0.01 1073.3 894.2 None 1631.6 1129.2 None 1872.6 1219.9 None CHAN10499 B CH035B 0 0 1 IRREGULAR 0.044 Earthen 617.8 616.4 None 0.01 1073.2 894.1 None 1633.8 1129.2 None 1875.1 1220.0 None CHAN10610 B 1 0 1 IRREGULAR 0.051 EARTHEN 125.0 125.5 None 0 237.8 232.9 None 374.1 364.2 None 431.0 418.6 None PIPE13642 B ZPIP10011 4 0 1 CIRCULAR 0.170 CMP 1.4 1.4 None 0 2.4 2.4 None 3.6 3.6 None 4.1 4.1 None PIPE13974 B ZPIP17315 3 0 1 CIRCULAR 0.395 RCP 1.9 1.9 None 0 3.0 3.0 None 4.3 4.3 None 4.9 4.9 None PIPE13988 B ZPIP11430 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.1 0.1 None PIPE14005 B ZPIP15041 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None PIPE14119 B ZPIP11783 1.5 0 1 CIRCULAR 0.276 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.9 None 0.0 0.5 None CHAN10479 B CH035H 0 0 1 IRREGULAR 0.060 Earthen 658.5 670.9 None 0 1121.6 1029.2 None 1545.6 1335.5 None 1682.4 1443.1 None DTCH10435 B 1 0 1 IRREGULAR 0.029 EARTHEN 73.5 73.7 None 0 179.7 179.9 None 290.1 290.5 None 342.6 343.0 None DTCH10436 B 1 0 1 IRREGULAR 0.057 EARTHEN 72.6 72.7 None 0 189.4 190.1 None 289.8 290.1 None 342.2 342.6 None CHAN10486 B CH035C 0 0 1 IRREGULAR 0.032 Earthen 657.7 670.0 None 0 1121.9 1030.4 None 1547.3 1337.5 None 1684.8 1445.5 None CHAN10488 B CH035C 0 0 1 IRREGULAR 0.033 Earthen 657.1 669.4 None 0.01 1121.2 1030.1 None 1547.0 1337.3 None 1684.5 1445.4 None CHAN10489 B CH035C 0 0 1 IRREGULAR 0.020 Earthen 656.1 668.5 None 0 1120.1 1029.6 None 1546.4 1337.0 None 1684.0 1445.3 None CHAN10492 B CH035G 0 0 1 IRREGULAR 0.031 Earthen 658.3 670.7 None 0 1121.7 1029.6 None 1546.1 1336.0 None 1683.1 1443.8 None CHAN10498 B CH035B 0 0 1 IRREGULAR 0.044 Earthen 618.1 616.6 None 0.01 1072.8 894.1 None 1631.2 1129.1 None 1872.2 1219.8 None CHAN10500 B CH035B 0 0 1 IRREGULAR 0.100 Earthen 617.4 616.1 None 0 1068.2 893.9 None 1627.9 1128.7 None 1867.6 1219.6 None CHAN10501 B CH035L 0 0 1 IRREGULAR 0.008 Earthen 618.0 618.1 None 0 1072.1 902.0 None 1629.1 1143.0 None 1869.8 1236.6 None CHAN10502 B CH035L 0 0 1 IRREGULAR 0.007 Earthen 617.9 615.8 None 0 1072.2 892.2 Downstream 1629.4 1126.6 Downstream 1870.2 1217.0 Downstream CHAN10504 B CH035N 0 0 1 IRREGULAR 0.045 Earthen 626.4 633.8 None 0 1081.9 1066.9 None 1633.9 1490.3 None 1873.3 1644.6 None CHAN10505 B CH035N 0 0 1 IRREGULAR 0.045 Earthen 625.7 633.0 None 0 1080.5 1066.8 None 1632.3 1489.9 None 1871.9 1644.4 None CHAN10506 B CH035N 0 0 1 IRREGULAR 0.045 Earthen 623.1 630.4 None 0 1076.7 1064.2 None 1627.6 1488.7 None 1866.4 1643.2 None CHAN10530 B 1 0 1 IRREGULAR 0.031 EARTHEN 124.0 124.4 None 0 234.8 230.0 None 368.9 360.9 None 425.3 416.9 None CHAN10539 B 0 0 1 IRREGULAR 0.020 Earthen 95.5 95.8 None 0 173.5 173.7 None 261.2 261.1 None 304.5 304.1 None CHAN10541 B 0 0 1 IRREGULAR 0.137 Earthen 94.9 95.3 None 0 172.4 172.6 None 260.9 260.8 None 298.0 298.3 None CHAN10555 B 1 0 1 IRREGULAR 0.087 Earth 52.1 52.3 None 0 93.1 93.2 None 143.5 143.2 None 166.5 165.9 None CHAN10602 B CH035H 0 0 1 IRREGULAR 0.036 Earthen 659.0 671.4 None 0.01 1122.1 1029.4 None 1545.9 1335.6 None 1682.7 1443.1 None CHAN10614 B CH035N 0 0 1 IRREGULAR 0.064 Earthen 630.2 637.2 None 0.01 1088.5 1072.2 None 1642.1 1493.7 None 1882.9 1646.5 None CHAN10615 B CH035B 0 0 1 IRREGULAR 0.061 Earthen 619.3 617.5 None 0 1074.8 894.5 None 1633.4 1129.4 None 1875.1 1220.1 None CHAN10618 B CH035I 0 0 1 IRREGULAR 0.088 Earthen 655.1 667.5 None 0 1116.4 1024.1 None 1537.9 1328.4 None 1673.7 1435.3 None CHAN10619 B CH035G 0 0 1 IRREGULAR 0.051 Earthen 658.6 671.0 None 0 1122.0 1029.7 None 1546.3 1336.1 None 1683.3 1443.9 None CHAN10620 B CH035M 0 0 1 IRREGULAR 0.019 Earthen 625.0 632.8 None 0 1080.6 1070.5 None 1635.4 1498.7 None 1875.3 1601.9 None CHAN10621 B CH035L 0 0 1 IRREGULAR 0.010 Earthen 621.0 630.4 None 0 1075.8 988.2 None 1632.8 1265.8 None 1874.0 1338.7 None PIPE13639 B ZPIP12301 1.5 0 1 CIRCULAR 0.112 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13644 B ZPIP10013 1.5 0 1 CIRCULAR 0.078 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13661 B ZPIP12319 2 0 1 CIRCULAR 0.042 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13662 B ZPIP12320 1.5 0 1 CIRCULAR 0.040 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 72 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE13670 B ZPIP12326 1.5 0 1 CIRCULAR 0.051 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13674 B ZPIP10023 1.5 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13675 B ZPIP10024 1.5 0 1 CIRCULAR 0.039 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13696 B ZPIP12360 1.5 0 1 CIRCULAR 0.079 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13700 B ZPIP16700 1.5 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13714 B ZPIP12373 1.5 0 1 CIRCULAR 0.134 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13719 B ZPIP12379 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 2.4 0.0 None PIPE13725 B ZPIP12386 1.5 0 1 CIRCULAR 0.152 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13755 B ZPIP10066 1.5 0 1 CIRCULAR 0.113 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13756 B ZPIP10067 1.5 0 1 CIRCULAR 0.115 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13758 B ZPIP12416 1.5 0 1 CIRCULAR 0.106 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13767 B ZPIP12422 1.5 0 1 CIRCULAR 0.113 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13770 B ZPIP12425 3 0 1 CIRCULAR 0.464 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13774 B ZPIP10074 2 0 1 CIRCULAR 0.111 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13791 B ZPIP10123 1.5 0 1 CIRCULAR 0.139 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13793 B ZPIP10125 4 0 1 CIRCULAR 0.427 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13796 B ZPIP12530 2 0 1 CIRCULAR 0.259 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13797 B ZPIP12531 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13798 B ZPIP12532 2 0 1 CIRCULAR 0.064 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13801 B ZPIP10127 1.5 0 1 CIRCULAR 0.708 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13802 B ZPIP12560 1.5 0 1 CIRCULAR 0.054 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13803 B ZPIP12561 2 0 1 CIRCULAR 0.104 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13807 B ZPIP12566 1.5 0 1 CIRCULAR 0.064 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13862 B ZPIP12660 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 1.1 0.0 None 5.8 0.0 None PIPE13870 B ZPIP12669 2 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13878 B ZPIP12676 1.5 0 1 CIRCULAR 0.004 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13892 B ZPIP13241 1.5 0 1 CIRCULAR 0.033 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13895 B ZPIP13282 3 0 1 CIRCULAR 0.219 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.3 None PIPE13912 B ZPIP13423 1.5 0 1 CIRCULAR 0.069 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13939 B ZPIP11408 1.5 0 1 CIRCULAR 0.399 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13943 B ZPIP11410 2 0 1 CIRCULAR 0.076 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13944 B ZPIP11412 1.5 0 1 CIRCULAR 0.074 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13945 B ZPIP14992 1.5 0 1 CIRCULAR 0.059 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13946 B ZPIP14993 1.5 0 1 CIRCULAR 0.065 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13954 B ZPIP17307 1.5 0 1 CIRCULAR 0.060 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13956 B ZPIP11417 1.5 0 1 CIRCULAR 0.345 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13957 B ZPIP11419 1.5 0 1 CIRCULAR 0.056 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13970 B ZPIP11424 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13971 B ZPIP11425 1.5 0 1 CIRCULAR 0.341 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13979 B ZPIP11428 2 0 1 CIRCULAR 0.583 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13980 B ZPIP15022 2 0 1 CIRCULAR 0.067 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13985 B ZPIP17320 1.5 0 1 CIRCULAR 0.245 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13990 B ZPIP11432 1.5 0 1 CIRCULAR 0.181 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE13992 B ZPIP15030 1.5 0 1 CIRCULAR 0.004 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14003 B ZPIP11438 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14004 B ZPIP11439 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14007 B ZPIP15043 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14020 B ZPIP11443 1.5 0 1 CIRCULAR 0.070 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14024 B ZPIP15054 1.5 0 1 CIRCULAR 0.259 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14035 B ZPIP11449 1.5 0 1 CIRCULAR 0.013 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14039 B ZPIP15066 1.5 0 1 CIRCULAR 0.059 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14067 B ZPIP15090 1.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14071 B ZPIP17352 2 0 1 CIRCULAR 0.266 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14078 B ZPIP17356 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14079 B ZPIP17357 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14094 B ZPIP17361 1.5 0 1 CIRCULAR 0.037 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14102 B ZPIP15126 1.5 0 1 CIRCULAR 0.377 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14110 B ZPIP11487 1.5 0 1 CIRCULAR 0.027 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14114 B ZPIP15695 1.5 0 1 CIRCULAR 0.025 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14120 B ZPIP15705 1.5 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14121 B ZPIP17521 1.5 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14128 B ZPIP15717 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14129 B ZPIP15719 1.5 0 1 CIRCULAR 0.049 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14141 B ZPIP11850 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14142 B ZPIP15825 2 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14143 B ZPIP15826 2 0 1 CIRCULAR 0.055 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14144 B ZPIP17575 1.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14145 B ZPIP17576 1.5 0 1 CIRCULAR 0.031 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14146 B ZPIP17577 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14151 B ZPIP15832 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14158 B ZPIP16157 3.5 0 1 CIRCULAR 0.049 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14159 B ZPIP16158 2 0 1 CIRCULAR 0.036 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14164 B ZPIP17809 0 0 1 DUMMY 0.087 RCP 17.4 17.5 None 0 28.6 28.7 None 42.8 43.1 None 48.8 49.0 None PIPE14165 B ZPIP17810 0 0 1 DUMMY 0.005 RCP 15.2 16.1 None 0 25.3 27.2 None 37.9 41.1 None 43.2 46.9 None PIPE14166 B ZPIP17811 0 0 1 DUMMY 0.044 RCP 9.0 10.3 None 0 14.7 16.3 None 21.5 23.8 None 24.2 26.9 None PIPE14167 B ZPIP12178 0 0 1 DUMMY 0.044 RCP 2.4 2.6 None 0 7.0 7.4 None 12.2 12.9 None 14.5 15.2 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 73 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14168 B ZPIP12179 0 0 1 DUMMY 0.094 RCP 148.6 149.2 None 0 252.8 249.2 None 379.7 345.6 None 432.8 392.7 None PIPE14169 B ZPIP12180 0 0 1 DUMMY 0.076 RCP 2.7 2.9 None 0 5.8 6.1 None 9.2 9.5 None 10.7 11.0 None PIPE14170 B ZPIP16453 0 0 1 DUMMY 0.125 RCP 12.3 13.1 None 0 42.6 20.6 None 29.3 30.1 None 33.0 33.9 None PIPE14171 B ZPIP12182 0 0 1 DUMMY 0.122 RCP 274.1 272.4 None 0 473.6 468.3 None 714.8 642.8 None 825.1 696.3 None PIPE14172 B ZPIP17819 0 0 1 DUMMY 0.020 RCP 66.5 67.5 None 0 107.9 107.6 None 158.2 161.7 None 179.3 171.9 None PIPE14173 B ZPIP17820 0 0 1 DUMMY 0.015 RCP 14.7 15.4 None 0 24.1 25.0 None 36.0 36.5 None 40.7 39.0 None PIPE14179 B ZPIP17904 0 0 1 DUMMY 0.069 EARTHEN 160.7 158.3 None 0 316.9 257.8 None 494.8 330.3 Downstream 603.4 368.5 Downstream PIPE14182 B 3 0 1 CIRCULAR 0.108 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10044 B 0 0 1 DUMMY 0.642 EARTHEN 1.4 1.4 None 0 2.4 2.4 None 3.6 3.6 None 4.1 4.1 None FLOW10045 B 0 0 1 DUMMY 0.045 EARTHEN 57.4 58.0 None 0 94.0 97.7 None 139.4 130.0 None 157.8 133.1 None PIPE14184 B 0 0 1 DUMMY 0.062 EARTHEN 5.3 6.0 None 0 8.7 9.6 None 13.1 14.2 None 14.9 16.0 None PIPE14185 B ZPIP11409 2.5 0 1 CIRCULAR 0.016 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10047 B 0 0 1 DUMMY -0.031 EARTHEN 112.4 146.8 None 0 258.8 270.9 None 393.5 420.0 None 454.5 466.5 None FLOW10050 B 0 0 1 DUMMY -0.147 EARTHEN 75.1 75.1 None 0 186.2 186.2 None 311.6 311.7 None 364.3 364.4 None DTCH10430 B 1 0 1 IRREGULAR 0.199 Concrete 36.3 36.3 None 0 103.0 103.0 None 180.7 180.7 None 213.6 213.6 None DTCH10431 B 1 0 1 IRREGULAR 0.199 Concrete 36.3 36.3 None 0 103.0 103.0 None 180.4 180.4 None 213.4 213.3 None DTCH10432 B 1 0 1 IRREGULAR 0.199 Concrete 36.3 36.3 None 0 102.8 102.8 None 180.1 180.0 None 212.8 212.8 None DTCH10433 B 1 0 1 IRREGULAR 0.199 Concrete 36.3 36.3 None 0 102.8 102.8 None 179.8 179.8 None 212.5 212.6 None DTCH10434 B 1 0 1 IRREGULAR 0.398 Concrete 36.2 36.2 None 0 102.6 102.6 None 179.6 179.6 None 212.3 212.4 None CHAN10484 B CH035C 0 0 1 IRREGULAR 0.032 Earthen 658.2 670.5 None 0 1122.3 1030.5 None 1547.6 1337.6 None 1685.0 1445.6 None CHAN10485 B CH035C 0 0 1 IRREGULAR 0.032 Earthen 657.9 670.2 None 0 1122.0 1030.4 None 1547.5 1337.5 None 1684.9 1445.6 None CHAN10491 B CH035F 0 0 1 IRREGULAR 0.116 Earthen 658.4 670.7 Downstream 0 1122.0 1030.0 Downstream 1546.8 1336.7 Downstream 1683.9 1444.5 Downstream CHAN10493 B CH035G 0 0 1 IRREGULAR 0.108 Earthen 658.3 670.6 Downstream 0 1121.6 1029.6 Downstream 1546.0 1336.0 Downstream 1683.0 1443.8 Downstream CHAN10503 B CH035M 0 0 1 IRREGULAR 0.034 Earthen 624.6 632.3 None 0 1076.8 1047.0 None 1627.5 1374.8 None 1866.8 1455.9 None CHAN10507 B CH035N 0 0 1 IRREGULAR 0.109 Earthen 622.0 629.2 None 0 1074.8 1063.0 None 1625.1 1488.0 None 1863.2 1642.6 None CHAN10508 B CH035O 0 0 1 IRREGULAR 0.063 Earthen 357.8 363.5 None 0 612.8 608.6 None 920.8 854.1 None 1049.6 953.7 None CHAN10509 B CH035O 0 0 1 IRREGULAR 0.063 Earthen 356.6 362.2 None 0 612.3 608.2 None 919.9 853.2 None 1048.7 953.2 None CHAN10510 B CH035O 0 0 1 IRREGULAR 0.063 Earthen 356.4 361.9 None 0 611.6 607.7 None 919.0 852.6 None 1047.9 952.8 None CHAN10511 B CH035O 0 0 1 IRREGULAR 0.695 Earthen 356.2 361.7 None 0 611.4 607.6 None 918.8 852.4 None 1047.7 952.8 None CHAN10512 B CH035P 0 0 1 IRREGULAR 0.098 Earthen 221.8 223.4 None 0 374.0 371.9 None 558.0 524.6 None 639.9 567.5 None CHAN10513 B CH035P 0 0 1 IRREGULAR 0.098 Earthen 221.5 223.1 None 0 373.6 371.4 None 557.5 523.9 None 639.1 567.1 None CHAN10514 B CH035P 0 0 1 IRREGULAR 2.153 Earthen 221.5 223.1 None 0 373.6 371.4 None 557.5 523.9 None 639.1 567.0 None CHAN10515 B CH035A 0.069 0 1 IRREGULAR 0.038 Earthen 221.1 220.9 None 0 369.1 366.6 None 549.7 514.2 None 630.8 554.4 None CHAN10516 B CH035A 0.069 0 1 IRREGULAR 0.038 Earthen 220.3 219.9 None 0 368.0 365.2 None 548.5 513.4 None 629.6 552.6 None CHAN10517 B CH035A 0.069 0 1 IRREGULAR 0.097 Earthen 220.1 219.7 None 0 367.6 364.7 None 547.8 512.8 None 628.8 551.9 None CHAN10518 B ZCH10072 0 0 1 IRREGULAR 0.300 Earthen 27.4 27.5 None 0 45.0 45.1 None 67.0 67.0 None 76.1 76.1 None CHAN10519 B ZCH10072 0 0 1 IRREGULAR 0.300 Earthen 27.4 27.5 None 0 45.1 45.1 None 66.8 66.8 None 75.9 75.8 None CHAN10520 B ZCH10072 0 0 1 IRREGULAR 0.315 Earthen 27.3 27.3 None 0 44.7 44.7 None 66.3 66.3 None 75.3 75.3 None CHAN10521 B ZCH10072 0 0 1 IRREGULAR 0.186 Earthen 27.0 27.1 None 0 44.3 44.3 None 65.9 65.8 None 74.8 74.8 None CHAN10522 B ZCH10072 0 0 1 IRREGULAR 0.212 Earthen 26.9 27.0 None 0 44.1 44.1 None 65.6 65.6 None 74.5 74.5 None CHAN10523 B ZCH10072 0 0 1 IRREGULAR 0.314 Earthen 26.6 26.6 None 0 43.7 43.8 None 65.1 65.1 None 74.0 74.0 None CHAN10524 B ZCH10072 0 0 1 IRREGULAR 0.137 Earthen 25.7 25.8 None 0 42.6 42.7 None 63.8 63.8 None 72.7 72.7 None CHAN10525 B ZCH10072 0 0 1 IRREGULAR 0.300 Earthen 25.3 25.3 None 0 42.2 42.2 None 63.4 63.4 None 72.3 72.3 None CHAN10526 B ZCH10072 0 0 1 IRREGULAR 0.300 Earthen 24.9 25.0 None 0 41.8 41.9 None 62.9 62.9 None 71.8 71.8 None CHAN10527 B ZCH10072 0 0 1 IRREGULAR 0.125 Earthen 24.9 25.0 None 0 41.8 45.1 None 62.9 90.2 Downstream 71.8 104.0 Downstream CHAN10528 B 1 0 1 IRREGULAR 0.030 EARTHEN 124.5 125.0 None 0 235.5 230.3 None 369.6 361.6 None 425.7 417.0 None CHAN10531 B 1 0 1 IRREGULAR 0.022 EARTHEN 123.0 123.4 None 0 233.4 229.4 None 366.6 359.5 None 423.9 416.6 None CHAN10532 B 1 0 1 IRREGULAR 0.028 EARTHEN 122.9 123.2 None 0 234.0 230.0 None 367.4 360.1 None 424.0 416.5 None CHAN10533 B 1 0 1 IRREGULAR 0.043 EARTHEN 121.9 122.3 None 0 233.1 229.6 None 366.0 359.1 None 422.8 416.1 None CHAN10534 B 1 0 1 IRREGULAR 0.030 EARTHEN 119.2 119.5 None 0 231.5 228.8 None 363.8 357.5 None 420.9 415.4 None CHAN10535 B 1 0 1 IRREGULAR 0.030 EARTHEN 118.8 119.1 None 0 231.3 228.8 None 362.8 356.7 None 419.9 415.0 None CHAN10536 B 1 0 1 IRREGULAR 0.030 EARTHEN 118.6 118.9 None 0 230.8 228.8 None 364.2 356.1 None 420.2 414.5 None CHAN10537 B 1 0 1 IRREGULAR 0.030 EARTHEN 118.9 119.3 None 0 230.1 227.5 None 362.7 291.5 None 429.2 294.9 None CHAN10538 B 1 0 1 IRREGULAR 0.175 EARTHEN 118.7 119.1 None 0 229.7 199.1 None 362.9 239.6 None 466.3 254.1 None CHAN10542 B 1 0 1 IRREGULAR 0.072 Earth 53.4 53.7 None 0 94.8 94.9 None 146.6 146.2 None 169.4 168.7 None CHAN10543 B 1 0 1 IRREGULAR 0.072 Earth 53.1 53.3 None 0 94.3 94.5 None 145.7 145.4 None 168.6 167.9 None CHAN10544 B 1 0 1 IRREGULAR 0.072 Earth 53.0 53.2 None 0 94.2 94.3 None 145.4 145.1 None 168.3 167.7 None CHAN10545 B 1 0 1 IRREGULAR 0.072 Earth 52.9 53.1 None 0 94.0 94.2 None 145.2 144.9 None 168.1 167.5 None CHAN10546 B 1 0 1 IRREGULAR 0.072 Earth 52.6 52.8 None 0 93.8 93.9 None 144.7 144.4 None 167.6 167.0 None CHAN10547 B 1 0 1 IRREGULAR 0.072 Earth 52.5 52.7 None 0 93.7 93.8 None 144.5 144.2 None 167.4 166.8 None CHAN10548 B 1 0 1 IRREGULAR 0.072 Earth 52.5 52.7 None 0 93.7 93.8 None 144.6 144.3 None 167.5 166.9 None CHAN10549 B 1 0 1 IRREGULAR 0.072 Earth 52.4 52.6 None 0 93.5 93.7 None 144.3 144.0 None 167.2 166.7 None CHAN10550 B 1 0 1 IRREGULAR 0.072 Earth 52.4 52.6 None 0 93.4 93.6 None 144.3 143.9 None 167.2 166.6 None CHAN10551 B 1 0 1 IRREGULAR 0.072 Earth 52.3 52.5 None 0 93.4 93.5 None 144.1 143.8 None 167.1 166.5 None CHAN10552 B 1 0 1 IRREGULAR 0.072 Earth 52.2 52.4 None 0 93.2 93.4 None 143.9 143.6 None 166.9 166.3 None CHAN10553 B 1 0 1 IRREGULAR 0.072 Earth 52.3 52.5 None 0 93.3 93.5 None 144.0 143.7 None 167.0 166.4 None CHAN10554 B 1 0 1 IRREGULAR 0.072 Earth 52.2 52.4 None 0 93.1 93.3 None 143.7 143.4 None 166.7 166.1 None CHAN10556 B 1 0 1 IRREGULAR 0.127 Earth 52.0 52.2 None 0 93.0 93.1 None 143.4 143.0 None 166.4 165.8 None CHAN10557 B 0 0 1 IRREGULAR 0.076 Earthen 40.3 40.4 None 0 71.4 71.5 None 108.6 108.2 None 124.2 123.3 None CHAN10558 B 0 0 1 IRREGULAR 0.076 Earthen 40.1 40.2 None 0 71.1 71.2 None 108.5 108.0 None 124.0 123.1 None CHAN10559 B 0 0 1 IRREGULAR 0.076 Earthen 39.8 39.9 None 0 70.7 70.8 None 108.1 107.7 None 123.6 122.8 None CHAN10560 B 0 0 1 IRREGULAR 0.076 Earthen 39.6 39.7 None 0 70.3 70.4 None 107.5 107.1 None 123.2 122.5 None CHAN10561 B 0 0 1 IRREGULAR 0.076 Earthen 39.5 39.6 None 0 70.2 70.2 None 107.2 106.8 None 122.8 122.1 None CHAN10562 B 0 0 1 IRREGULAR 0.076 Earthen 39.4 39.5 None 0 69.7 69.8 None 107.4 107.0 None 122.7 122.0 None CHAN10563 B 0 0 1 IRREGULAR 0.076 Earthen 39.4 39.5 None 0 69.6 69.7 None 106.9 106.5 None 122.5 121.8 None CHAN10564 B 0 0 1 IRREGULAR 0.076 Earthen 39.3 39.3 None 0 69.6 69.7 None 106.8 106.4 None 122.1 121.5 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 74 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
CHAN10565 B 0 0 1 IRREGULAR 0.076 Earthen 39.1 39.1 None 0 69.4 69.4 None 106.5 106.1 None 121.8 121.2 None CHAN10566 B 0 0 1 IRREGULAR 0.076 Earthen 38.8 38.9 None 0 68.9 69.0 None 106.0 105.6 None 121.0 120.4 None CHAN10567 B 0 0 1 IRREGULAR 0.930 Earthen 38.8 38.9 None 0 68.9 69.0 None 106.0 105.6 None 121.0 120.4 None CHAN10568 B 0 0 1 IRREGULAR 0.183 Earthen 35.7 35.8 None 0 63.3 63.4 None 96.0 95.4 None 110.0 108.6 None CHAN10569 B 0 0 1 IRREGULAR 0.183 Earthen 35.1 35.2 None 0 62.4 62.5 None 94.8 94.3 None 108.4 107.3 None CHAN10570 B 0 0 1 IRREGULAR 2.216 Earthen 35.1 35.2 None 0 62.3 62.5 None 94.8 94.3 None 108.4 107.3 None CHAN10571 B 0 0 1 IRREGULAR 0.225 Earthen 24.4 24.5 None 0 38.9 39.0 None 57.1 57.2 None 64.4 64.6 None CHAN10572 B 0 0 1 IRREGULAR 0.075 Earthen 23.8 23.8 None 0 38.1 38.2 None 55.7 55.8 None 62.9 63.0 None CHAN10573 B 0 0 1 IRREGULAR 0.131 Earthen 23.7 23.7 None 0 37.8 37.9 None 55.3 55.4 None 62.5 62.6 None CHAN10574 B 0 0 1 IRREGULAR 0.133 Earthen 23.3 23.3 None 0 37.4 37.4 None 54.8 54.9 None 62.0 62.1 None CHAN10575 B 0 0 1 IRREGULAR 0.129 Earthen 23.2 23.3 None 0 37.3 37.3 None 54.8 54.8 None 61.9 62.0 None CHAN10576 B 0 0 1 IRREGULAR 0.131 Earthen 23.1 23.1 None 0 37.0 37.1 None 54.3 54.3 None 61.5 61.5 None CHAN10577 B 0 0 1 IRREGULAR 0.131 Earthen 22.9 22.9 None 0 36.8 36.8 None 53.9 54.0 None 61.1 61.2 None CHAN10578 B 0 0 1 IRREGULAR 0.131 Earthen 22.7 22.8 None 0 36.6 36.6 None 53.7 53.7 None 60.8 60.9 None CHAN10579 B 0 0 1 IRREGULAR 0.131 Earthen 22.6 22.6 None 0 36.4 36.4 None 53.4 53.5 None 60.6 60.6 None CHAN10580 B 0 0 1 IRREGULAR 0.131 Earthen 22.5 22.5 None 0 36.3 36.3 None 53.2 53.3 None 60.4 60.4 None CHAN10581 B 0 0 1 IRREGULAR 0.131 Earthen 22.4 22.4 None 0 36.0 36.1 None 52.9 53.0 None 60.0 60.1 None CHAN10582 B 0 0 1 IRREGULAR 0.131 Earthen 22.1 22.1 None 0 35.7 35.7 None 52.4 52.5 None 59.2 59.2 None CHAN10583 B 0 0 1 IRREGULAR 0.131 Earthen 22.0 22.0 None 0 35.5 35.5 None 52.2 52.3 None 59.0 59.1 None CHAN10584 B 0 0 1 IRREGULAR 0.131 Earthen 22.0 22.0 None 0 35.5 35.5 None 52.0 52.1 None 58.8 58.9 None CHAN10585 B 0 0 1 IRREGULAR 0.131 Earthen 21.9 21.9 None 0 35.4 35.4 None 52.0 52.0 None 58.8 58.8 None CHAN10586 B 0 0 1 IRREGULAR 0.096 Earthen 21.7 21.7 None 0 35.2 35.2 None 51.6 51.7 None 58.4 58.4 None CHAN10587 B 0.381 0 1 IRREGULAR 0.352 EARTHEN 28.1 28.2 None 0 44.5 44.5 None 64.7 64.8 None 73.0 73.1 None CHAN10588 B 0.381 0 1 IRREGULAR 0.352 EARTHEN 28.0 28.1 None 0 44.4 44.4 None 64.6 64.7 None 72.9 73.0 None CHAN10589 B 0.381 0 1 IRREGULAR 0.352 EARTHEN 27.9 27.9 None 0 44.1 44.1 None 64.2 64.3 None 72.5 72.6 None CHAN10590 B 0.381 0 1 IRREGULAR 1.560 EARTHEN 27.8 27.9 None 0 44.1 44.1 None 64.2 64.3 None 72.5 72.6 None CHAN10591 B 0 0 1 IRREGULAR 0.153 Earthen 22.1 22.1 None 0 40.9 40.9 None 62.3 62.1 None 71.4 70.1 None CHAN10592 B 0 0 1 IRREGULAR 0.153 Earthen 22.0 22.1 None 0 40.8 40.8 None 61.9 61.6 None 70.8 69.8 None CHAN10593 B 0 0 1 IRREGULAR 0.153 Earthen 21.9 22.0 None 0 40.5 40.5 None 61.6 61.4 None 70.5 69.7 None CHAN10594 B 0 0 1 IRREGULAR 0.153 Earthen 21.8 21.8 None 0 40.3 40.3 None 61.4 61.2 None 70.4 69.6 None CHAN10595 B 0 0 1 IRREGULAR 0.153 Earthen 21.7 21.8 None 0 40.2 40.2 None 61.2 61.0 None 70.2 69.5 None CHAN10596 B 0 0 1 IRREGULAR 0.153 Earthen 21.6 21.6 None 0 40.1 40.1 None 61.0 60.8 None 70.0 69.3 None CHAN10597 B 0 0 1 IRREGULAR 0.096 Earthen 12.7 16.4 None 0 23.6 26.7 None 36.8 41.3 None 42.5 47.4 None CHAN10598 B 0 0 1 IRREGULAR 0.093 Earthen 12.6 16.2 None 0 23.6 26.5 None 36.6 40.9 None 42.3 47.0 None CHAN10599 B 0 0 1 IRREGULAR 0.092 Earthen 12.6 16.1 None 0 23.5 26.3 None 36.5 40.5 None 42.2 46.7 None CHAN10600 B 0 0 1 IRREGULAR 0.094 Earthen 12.5 15.9 None 0 23.4 26.2 None 36.4 40.2 None 42.1 46.5 None DTCH10437 B 1 0 1 IRREGULAR 1.343 Concrete 36.3 36.3 None 0 103.2 103.2 None 181.1 181.1 None 214.0 214.0 None CHAN10604 B CH035C 0 0 1 IRREGULAR 0.055 Earthen 658.7 671.0 Upstream 0 1122.7 1030.7 Upstream 1547.9 1337.7 Upstream 1685.2 1445.7 Upstream CHAN10605 B CH035F 0 0 1 IRREGULAR 0.070 Earthen 658.5 670.8 Upstream 0 1122.1 1030.1 Upstream 1546.8 1336.7 Upstream 1683.9 1444.6 Upstream CHAN10606 B 1 0 1 IRREGULAR 0.104 Earth 53.7 54.0 None 0 95.3 95.5 None 147.4 147.0 None 170.2 169.5 None CHAN10607 B 0 0 1 IRREGULAR 0.138 Earthen 40.5 40.6 None 0 71.8 71.9 None 109.1 108.6 None 124.8 123.8 None CHAN10608 B 0 0 1 IRREGULAR 0.035 Earthen 95.6 96.0 None 0 173.9 174.1 None 261.6 261.5 None 305.0 304.6 None CHAN10609 B ZCH10072 0 0 1 IRREGULAR 0.509 Earthen 27.7 27.8 None 0 45.4 45.5 None 67.5 67.5 None 76.5 76.5 None CHAN10611 B CH035A 0.069 0 1 IRREGULAR 0.055 Earthen 221.9 221.9 None 0 370.4 374.3 None 550.8 516.7 None 632.1 556.8 None CHAN10612 B CH035P 0 0 1 IRREGULAR 0.179 Earthen 222.0 223.7 None 0 374.5 372.7 None 558.9 525.5 None 641.6 568.3 None CHAN10613 B CH035O 0 0 1 IRREGULAR 0.114 Earthen 358.3 364.2 None 0 614.0 609.4 None 922.0 855.6 None 1050.6 954.2 None CHAN10623 B 0 0 1 IRREGULAR 0.149 Earthen 12.8 16.8 None 0 23.9 27.5 None 37.2 42.7 None 42.9 48.7 None CHAN10624 B 0 0 1 IRREGULAR 0.284 Earthen 22.5 22.5 None 0 41.2 41.2 None 62.9 62.6 None 72.0 70.2 None CHAN10625 B 0.381 0 1 IRREGULAR 0.541 EARTHEN 28.7 28.8 None 0 45.5 45.5 None 66.2 66.3 None 74.8 74.9 None CHAN10626 B 0 0 1 IRREGULAR 0.260 Earthen 24.5 24.6 None 0 39.1 39.3 None 57.3 57.6 None 64.7 64.9 None CHAN10627 B 0 0 1 IRREGULAR 0.316 Earthen 36.0 36.1 None 0 63.6 63.8 None 96.4 95.8 None 110.4 109.1 None CHAN10786 B 0 0 1 IRREGULAR 0.149 Earthen 12.4 15.8 None 0 23.2 26.1 None 36.1 39.9 None 41.8 46.2 None CHAN10787 B 0 0 1 IRREGULAR 0.284 Earthen 21.2 21.3 None 0 39.6 39.7 None 60.4 60.4 None 69.6 69.1 None PIPE14704 C ZPIP12768 2 0 1 CIRCULAR 0.002 CMP 23.4 23.4 None 4.22 56.0 43.6 Upstream 76.3 64.0 Both Upstream and Downstream 82.3 72.7 Both Upstream and Downstream PIPE14749 C ZPIP11020 3.5 0 1 CIRCULAR 0.000 RCP 72.9 73.7 None 3.57 140.6 102.7 None 219.0 158.1 None 262.5 198.9 Downstream PIPE14789 C ZPIP12168 3.5 0 1 CIRCULAR 0.000 RCP 74.7 71.5 None 3.52 139.3 109.3 None 219.0 172.1 None 259.5 194.6 Upstream PIPE14657 C ZPIP12266 2.5 0 1 CIRCULAR 0.000 RCP 54.4 38.2 None 5.12 75.5 60.6 None 89.2 63.3 None 96.6 66.0 None FLOW10069 C 4 10 1 TRAPEZOIDAL 0.000 RCP 436.2 463.9 None 2.79 758.2 798.0 None 1097.3 1098.2 None 1234.0 1124.1 None PIPE14692 C PIP19104 1.5 0 1 CIRCULAR 0.016 RCP 14.3 15.0 None 1.14 28.7 27.4 Both Upstream and Downstream 44.4 40.4 Both Upstream and Downstream 51.0 45.5 Both Upstream and Downstream PIPE14669 C PIP19105 1.5 0 1 CIRCULAR 0.005 RCP 5.5 5.8 None 0.78 11.4 11.5 None 18.0 17.9 None 20.8 24.6 None PIPE14691 C PIP19103 1.5 0 1 CIRCULAR 0.016 RCP 14.3 15.0 None 1.15 28.7 26.2 Upstream 44.4 37.4 Upstream 51.0 42.1 Upstream PIPE14473 C ZPIP11091 1.5 0 1 CIRCULAR 0.021 RCP 26.2 28.9 Upstream 1.88 50.0 33.6 Both Upstream and Downstream 77.8 42.0 Both Upstream and Downstream 89.8 45.6 Both Upstream and Downstream PIPE14500 C ZPIP11251 1.5 0 1 CIRCULAR 0.005 RCP 9.3 9.0 None 1.26 14.7 16.1 None 21.5 20.7 None 24.3 21.2 None PIPE14188 C ZPIP12474 3.5 0 1 CIRCULAR 0.003 RCP 45.1 49.4 None 0.94 78.4 81.5 None 118.1 120.2 None 135.3 132.0 None PIPE14342 C ZPIP10880 1.5 0 1 CIRCULAR 0.012 RCP 11.1 11.0 None 0.97 18.6 19.6 None 27.7 27.2 None 31.4 27.5 None PIPE14417 C ZPIP17088 1.5 0 1 CIRCULAR 0.013 RCP 10.0 10.0 None 0.84 16.1 15.9 None 23.6 23.9 None 26.7 28.7 None PIPE14545 C ZPIP11610 2 0 1 CIRCULAR 0.008 RCP 15.4 16.8 None 0.23 27.7 29.6 None 43.3 42.9 None 50.1 48.3 None PIPE14405 C ZPIP10938 2 0 1 CIRCULAR 0.007 RCP 15.1 15.1 None 0.79 24.3 33.6 None 35.8 42.6 None 40.6 42.5 None PIPE14347 C ZPIP13984 1.5 0 1 CIRCULAR 0.019 RCP 11.0 11.0 None 0.77 20.0 21.2 None 30.3 28.0 Upstream 34.6 31.4 Upstream PIPE14625 C ZPIP15812 1.5 0 1 CIRCULAR 0.029 RCP 16.1 16.1 None 0.89 26.3 26.6 None 39.1 36.6 Upstream 44.3 39.4 Upstream PIPE14566 C ZPIP15446 1.5 0 1 CIRCULAR 0.015 RCP 12.2 12.1 None 0.94 19.9 20.1 None 29.9 25.3 Both Upstream and Downstream 34.2 27.1 Both Upstream and Downstream PIPE14738 C ZPIP16596 2 0 1 CIRCULAR 0.022 RCP 23.4 23.4 None 0.7 50.8 43.6 None 71.3 62.5 Both Upstream and Downstream 82.2 70.0 Both Upstream and Downstream PIPE14679 C PIP20045 3 0 1 CIRCULAR 0.010 RCP 65.3 66.4 None 1 105.0 111.1 None 154.2 136.4 None 174.9 136.6 None PIPE14766 C ZPIP17234 1.5 0 1 CIRCULAR 0.011 RCP 9.3 9.3 None 0.85 14.7 15.3 None 21.5 20.8 None 24.3 21.7 None PIPE14386 C ZPIP10931 3 0 1 CIRCULAR 0.006 RCP 36.2 36.3 None 0.73 60.5 60.7 None 90.2 91.8 None 102.4 97.9 None PIPE14671 C PIP19107 1.5 0 1 CIRCULAR 0.005 RCP 2.9 2.9 None 0.39 6.1 6.1 None 9.6 10.1 None 11.2 14.6 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 75 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14203 C ZPIP16758 2 0 1 CIRCULAR 0.011 RCP 10.9 10.9 None 0.46 23.7 23.6 None 37.7 39.5 None 43.8 46.2 None PIPE14600 C ZPIP15793 1.167 0 1 CIRCULAR 0.065 RCP 14.6 14.1 None 1.03 24.6 22.7 None 36.8 25.5 Upstream 41.8 26.3 Upstream PIPE14312 C ZPIP10866 1.5 0 1 CIRCULAR 0.010 PVC 7.4 7.3 None 0.7 11.7 11.7 None 17.3 17.3 None 19.6 19.6 None PIPE14726 C ZPIP15460 1.5 0 1 CIRCULAR 0.008 RCP 5.6 5.6 None 0.59 10.4 10.1 None 16.0 17.0 None 18.3 17.9 None PIPE14350 C ZPIP13987 10 0 1 CIRCULAR 0.004 CMP 353.0 365.3 None 0.62 600.3 614.7 None 919.5 915.6 None 1053.0 1065.6 None PIPE14788 C ZPIP13373 1.5 0 1 CIRCULAR 0.050 RCP 104.8 33.6 Upstream 1.43 186.2 38.0 Upstream 285.5 41.2 Upstream 327.7 42.3 Upstream PIPE14665 C PIP19100 1.5 0 1 CIRCULAR 0.009 HDPE 5.9 5.9 None 0.58 11.2 11.2 None 17.3 17.2 None 19.9 18.1 None PIPE14512 C ZPIP11264 1.5 0 1 CIRCULAR 0.054 RCP 16.9 16.9 None 0.69 26.8 26.3 None 39.3 40.9 None 44.3 43.0 None PIPE14235 C ZPIP16864 2 0 1 CIRCULAR 0.013 RCP 17.0 17.1 None 0.66 26.8 26.4 None 39.2 40.9 None 44.3 45.6 None PIPE14797 C ZPIP12770 2 0 1 CIRCULAR 0.068 RCP 37.7 37.6 None 0.64 74.3 68.4 None 111.4 95.9 Upstream 128.2 103.4 Upstream PIPE14751 C ZPIP11075 1.5 0 1 CIRCULAR 0.173 RCP 45.1 47.2 None 1.08 87.5 57.0 Upstream 136.4 69.2 Upstream 157.8 75.0 Upstream PIPE14251 C ZPIP13142 1.5 0 1 CIRCULAR 0.018 RCP 10.0 10.0 None 0.71 16.3 15.0 None 24.4 21.8 None 27.7 23.2 Upstream PIPE14221 C ZPIP13031 1.5 0 1 CIRCULAR 0.010 RCP 6.7 6.8 None 0.63 10.7 10.7 None 15.8 14.9 None 17.9 17.6 None PIPE14826 C ZPIP17623 2 0 1 CIRCULAR 0.028 RCP 20.2 20.2 None 0.53 37.2 37.2 None 61.3 54.5 Upstream 71.4 62.0 Both Upstream and Downstream PIPE14278 C ZPIP10819 2.5 0 1 CIRCULAR 0.018 RCP 25.4 27.0 None 0.49 47.5 49.7 None 73.3 79.4 None 84.3 88.5 None PIPE14392 C ZPIP14082 1.5 0 1 CIRCULAR 0.026 RCP 10.4 10.4 None 0.61 16.4 16.3 None 24.1 24.2 None 27.2 27.3 None PIPE14274 C ZPIP13858 3 0 1 CIRCULAR 0.032 CMP 30.2 32.4 None 0.5 55.9 58.8 None 86.0 97.6 None 98.8 102.1 None FLOW10085 C 1 0 1 CIRCULAR 0.077 RCP 18.1 13.7 None 1.07 30.5 16.0 None 45.5 17.9 Upstream 51.8 15.6 Upstream PIPE14489 C ZPIP14682 1.5 0 1 CIRCULAR 0.013 RCP 5.9 5.9 None 0.5 10.0 10.0 None 15.2 15.9 None 17.3 18.3 None CULV10254 C ZCUL16822 4.5 0 1 CIRCULAR 0.012 RCP 210.4 193.8 None 0.9 291.8 267.3 None 421.3 320.3 None 454.6 332.2 None PIPE14823 C ZPIP16013 2 0 1 CIRCULAR 0.042 RCP 29.1 29.1 None 0.63 51.6 50.8 None 82.5 72.1 Upstream 95.4 70.5 Upstream PIPE14801 C ZPIP11835 2.515 0 1 CIRCULAR 0.013 RCP 33.7 33.1 None 0.69 55.8 53.1 None 83.1 66.5 None 94.2 69.8 None PIPE14276 C ZPIP13860 2.5 0 1 CIRCULAR 0.017 RCP 22.7 24.1 None 0.44 42.5 44.2 None 65.5 67.9 None 75.3 77.8 None PIPE14497 C ZPIP11248 2 0 1 CIRCULAR 0.015 RCP 14.3 14.3 None 0.51 23.1 23.0 None 34.3 33.1 None 38.9 39.7 None PIPE14345 C ZPIP13982 1.5 0 1 CIRCULAR 0.014 RCP 6.3 6.3 None 0.5 10.5 10.4 None 15.5 16.5 None 17.6 17.8 None PIPE14585 C ZPIP17487 1.5 0 1 CIRCULAR 0.054 RCP 10.1 10.1 None 0.42 19.2 19.2 None 29.5 29.8 None 33.8 33.5 None PIPE14421 C ZPIP14103 1.5 0 1 CIRCULAR 0.009 RCP 4.5 4.5 None 0.45 7.4 7.4 None 10.9 10.9 None 12.4 13.7 None PIPE14672 C PIP19108 1.5 0 1 CIRCULAR 0.005 RCP 2.4 2.4 None 0.33 5.1 5.0 None 8.0 8.0 None 9.3 10.1 None PIPE14646 C ZPIP11944 4.5 0 1 CIRCULAR 0.012 RCP 104.4 105.4 None 0.48 192.1 184.1 None 300.8 269.2 None 345.7 294.5 None PIPE14655 C ZPIP16600 3 0 1 CIRCULAR 0.024 RCP 44.0 44.0 None 0.43 78.7 78.6 None 121.0 120.7 None 139.3 138.3 None PIPE14488 C ZPIP14681 2 0 1 CIRCULAR 0.040 RCP 26.3 26.3 None 0.58 42.5 42.5 None 63.5 59.3 None 72.0 59.5 Upstream PIPE14768 C ZPIP11262 1.5 0 1 CIRCULAR 0.050 RCP 12.2 12.1 None 0.51 19.3 19.2 None 28.3 27.9 None 31.9 30.8 None PIPE14426 C ZPIP14186 2.5 0 1 CIRCULAR 0.035 RCP 36.3 36.5 None 0.48 59.2 59.3 None 87.9 89.7 None 99.5 99.5 None PIPE14673 C PIP19109 1.5 0 1 CIRCULAR 0.005 RCP 2.4 2.4 None 0.33 5.3 5.0 None 8.4 7.9 None 9.9 9.6 None PIPE14272 C ZPIP13856 2.5 0 1 CIRCULAR 0.036 RCP 30.2 32.4 None 0.42 55.9 58.8 None 85.9 94.3 None 98.8 99.7 None PIPE14821 C ZPIP11937 2 0 1 CIRCULAR 0.043 RCP 26.6 26.6 None 0.56 47.6 47.2 None 76.6 60.5 Downstream 88.6 60.5 Both Upstream and Downstream PIPE14780 C ZPIP10876 3 0 1 CIRCULAR 0.019 RCP 56.5 59.0 None 0.63 89.2 92.3 None 130.4 114.6 Upstream 147.5 118.2 Both Upstream and Downstream PIPE14790 C ZPIP12168 3.5 0 1 CIRCULAR 0.043 RCP 98.5 99.3 None 0.48 179.3 172.6 None 287.0 252.1 Downstream 346.7 265.8 Downstream PIPE14791 C ZPIP12168 3.5 0 1 CIRCULAR 0.043 RCP 99.8 97.6 None 0.47 187.9 173.3 None 283.3 243.7 Upstream 357.6 265.7 Both Upstream and Downstream PIPE14195 C ZPIP12738 4 0 1 CIRCULAR 0.012 RCP 71.0 71.6 None 0.45 119.7 122.4 None 179.8 180.8 None 205.1 201.2 None PIPE14502 C ZPIP11253 3 0 1 CIRCULAR 0.026 RCP 45.6 45.7 None 0.42 77.5 77.6 None 115.9 114.5 None 132.1 136.2 None PIPE14456 C ZPIP14377 3.5 0 1 CIRCULAR 0.029 RCP 64.7 66.2 None 0.39 127.7 128.5 None 200.1 188.3 None 233.0 209.7 None PIPE14802 C ZPIP16026 4.5 0 1 CIRCULAR 0.008 RCP 78.9 78.8 None 0.45 138.0 130.8 None 216.1 187.1 None 246.7 214.9 None PIPE14194 C ZPIP10230 4 0 1 CIRCULAR 0.017 RCP 75.5 76.2 None 0.41 127.0 131.0 None 191.0 192.7 None 217.9 227.0 None PIPE14353 C ZPIP10921 3 0 1 CIRCULAR 0.008 RCP 28.3 28.3 None 0.49 46.8 46.6 None 69.6 68.3 None 78.9 70.6 None PIPE14380 C ZPIP14073 2 0 1 CIRCULAR 0.013 RCP 11.7 11.8 None 0.45 18.7 18.6 None 27.4 27.0 None 30.9 31.9 None PIPE14653 C ZPIP16598 2 0 1 CIRCULAR 0.105 CMP 34.9 34.9 None 0.88 57.1 43.2 None 85.0 46.6 None 96.4 48.4 Upstream PIPE14590 C ZPIP17509 3.5 0 1 CIRCULAR 0.012 RCP 65.7 66.5 None 0.6 105.4 106.0 None 153.0 136.8 Upstream 172.2 133.1 None PIPE14601 C ZPIP15794 1.5 0 1 CIRCULAR 0.028 RCP 10.9 10.9 None 0.63 18.8 18.9 None 28.3 21.2 Both Upstream and Downstream 32.3 21.2 Both Upstream and Downstream PIPE14198 C ZPIP12758 3.5 0 1 CIRCULAR 0.015 RCP 51.2 53.3 None 0.43 88.3 92.8 None 133.1 132.1 None 151.8 150.1 None PIPE14343 C ZPIP10881 1.5 0 1 CIRCULAR 0.024 RCP 7.4 7.4 None 0.45 12.3 13.3 None 18.2 19.0 None 20.7 19.7 Upstream PIPE14757 C ZPIP11086 2 0 1 CIRCULAR 0.029 RCP 17.9 17.9 None 0.46 33.1 33.1 None 50.3 44.0 None 57.5 46.3 None PIPE14429 C ZPIP14206 1.5 0 1 CIRCULAR 0.013 RCP 4.5 4.5 None 0.37 7.3 7.7 None 10.9 10.9 None 12.3 14.3 None PIPE14681 C 2 0 1 CIRCULAR 0.072 RCP 29.1 29.2 None 0.48 56.2 56.3 None 88.8 70.1 Upstream 102.6 71.7 Upstream CULV10257 C CUL057 5 6.333 1 RECT_CLOSED 0.009 RCP 191.2 198.3 Upstream 0.46 366.9 378.1 Upstream 488.6 489.6 Upstream 522.1 514.6 Upstream PIPE14778 C ZPIP17877 5 0 1 CIRCULAR 0.012 RCP 97.5 101.0 None 0.36 201.6 215.7 Downstream 315.5 314.2 Both Upstream and Downstream 363.4 332.3 Both Upstream and Downstream PIPE14688 C 2 0 1 CIRCULAR 0.072 RCP 29.1 29.2 None 0.48 56.1 56.2 None 88.7 69.2 None 102.5 70.9 None PIPE14781 C 3 0 1 CIRCULAR 0.019 RCP 58.7 60.4 None 0.65 92.9 94.4 None 135.9 108.3 None 153.8 108.9 Upstream PIPE14339 C ZPIP13979 2 0 1 CIRCULAR 0.060 RCP 25.8 25.9 None 0.47 42.6 42.9 None 63.2 60.8 None 71.7 64.5 None PIPE14314 C ZPIP10868 2 0 1 CIRCULAR 0.008 PVC 8.7 8.7 None 0.43 14.0 13.9 None 20.6 20.4 None 23.3 23.0 None PIPE14492 C ZPIP17231 2 0 1 CIRCULAR 0.050 RCP 26.3 26.3 None 0.52 42.6 42.6 None 63.6 56.8 None 72.2 58.0 None PIPE14262 C ZPIP13486 1.5 0 1 CIRCULAR 0.008 RCP 4.2 4.2 None 0.44 6.7 6.7 None 9.9 9.8 None 11.1 10.9 None PIPE14528 C ZPIP11604 5 0 1 CIRCULAR 0.010 RCP 103.0 114.7 None 0.44 172.9 197.4 None 258.4 279.8 Downstream 293.7 298.3 Downstream PIPE14373 C ZPIP14069 3 0 1 CIRCULAR 0.010 RCP 30.1 30.1 None 0.45 49.6 49.1 None 73.5 73.1 None 83.2 76.2 None PIPE14784 C ZPIP11515 8 0 1 CIRCULAR 0.013 RCP 443.4 436.2 None 0.42 599.8 614.3 None 918.6 915.0 None 1052.4 1178.8 None PIPE14513 C ZPIP14718 7 0 1 CIRCULAR 0.009 RCP 287.8 513.8 Both Upstream and Downstream 0.85 559.1 579.0 Both Upstream and Downstream 840.9 614.8 Both Upstream and Downstream 921.5 679.6 Both Upstream and Downstream PIPE14603 C ZPIP17558 1.5 0 1 CIRCULAR 0.028 RCP 3.8 3.8 None 0.22 6.0 7.3 None 8.7 19.9 Both Upstream and Downstream 9.8 19.4 Both Upstream and Downstream PIPE14706 C ZPIP12771 2 0 1 CIRCULAR 0.168 RCP 37.7 37.6 None 0.41 74.2 67.2 None 111.4 96.1 None 128.2 103.4 None PIPE14206 C ZPIP12799 1.5 0 1 CIRCULAR 0.063 RCP 12.8 12.8 None 0.49 20.7 19.6 None 30.8 27.9 None 35.0 28.8 None PIPE14356 C ZPIP14057 3.5 0 1 CIRCULAR 0.009 RCP 37.7 37.7 None 0.4 62.8 63.0 None 93.5 93.6 None 106.2 101.8 None PIPE14374 C ZPIP14070 3 0 1 CIRCULAR 0.011 RCP 30.0 30.1 None 0.43 49.6 49.1 None 73.6 71.6 None 83.3 74.7 None PIPE14531 C ZPIP15351 3.5 0 1 CIRCULAR -0.008 RCP 33.1 35.0 None 0.31 52.2 54.8 None 74.9 77.0 None 84.1 94.8 None PIPE14822 C ZPIP16014 2 0 1 CIRCULAR 0.065 RCP 26.3 26.3 None 0.46 47.2 46.9 None 76.0 62.2 Both Upstream and Downstream 88.2 62.3 Both Upstream and Downstream PIPE14261 C ZPIP13483 4 0 1 CIRCULAR 0.019 RCP 73.7 74.4 None 0.38 124.2 128.0 None 186.8 188.6 None 213.2 211.4 None PIPE14486 C ZPIP11242 2 0 1 CIRCULAR 0.054 RCP 24.1 24.1 None 0.46 39.0 39.1 None 58.3 56.2 None 66.2 56.4 Both Upstream and Downstream PIPE14712 C ZPIP11077 2 0 1 CIRCULAR 0.037 RCP 18.8 18.8 None 0.43 34.6 34.5 None 52.5 44.9 None 60.0 47.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 76 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14776 C ZPIP11945 4.5 0 1 CIRCULAR 0.019 RCP 105.6 106.9 None 0.39 194.7 186.8 None 304.7 265.9 None 350.7 288.8 None PIPE14470 C ZPIP11088 1.5 0 1 CIRCULAR 0.032 RCP 7.1 7.1 None 0.38 12.4 12.2 None 18.8 18.2 None 21.5 19.8 None PIPE14682 C ZPIP11942 4.5 0 1 CIRCULAR 0.020 RCP 103.4 104.1 None 0.37 189.9 181.8 None 297.8 262.7 None 342.2 294.3 None PIPE14472 C ZPIP14394 3 0 1 CIRCULAR 0.042 RCP 50.8 50.7 None 0.37 91.2 90.4 None 138.1 130.1 None 157.9 142.9 None PIPE14530 C ZPIP15350 5 0 1 CIRCULAR 0.012 RCP 101.6 111.1 None 0.38 173.7 184.9 None 258.8 267.5 None 296.3 302.1 None PIPE14540 C ZPIP17432 2.5 0 1 CIRCULAR 0.052 RCP 32.9 35.4 None 0.38 55.9 59.0 None 84.8 85.9 None 97.2 97.3 None PIPE14755 C ZPIP14379 3 0 1 CIRCULAR 0.025 RCP 40.6 40.5 None 0.38 72.7 72.1 None 109.9 100.9 None 125.5 110.1 None PIPE14507 C ZPIP17236 2.5 0 1 CIRCULAR 0.021 RCP 20.7 20.9 None 0.35 36.3 36.5 None 54.1 53.7 None 61.8 60.9 None PIPE14546 C ZPIP11611 2.5 0 1 CIRCULAR 0.043 RCP 29.2 31.4 None 0.37 50.0 52.7 None 76.1 76.9 None 87.3 87.4 None CULV10253 C ZCUL16147 6 4 1 RECT_CLOSED 0.009 RCP 105.9 118.9 None 0.4 177.6 206.3 None 264.8 291.0 Upstream 303.8 308.1 Upstream PIPE14642 C ZPIP15988 2.5 0 1 CIRCULAR 0.008 RCP 15.4 16.9 None 0.45 23.0 25.1 None 31.9 34.9 None 35.7 38.6 None PIPE14764 C ZPIP14680 2 0 1 CIRCULAR 0.044 RCP 19.1 19.2 None 0.4 30.8 30.9 None 45.8 44.8 None 51.9 49.1 Both Upstream and Downstream PIPE14687 C 2 0 1 CIRCULAR 0.072 RCP 22.7 22.7 None 0.37 45.3 45.4 None 72.5 62.1 Both Upstream and Downstream 84.0 62.2 Both Upstream and Downstream PIPE14197 C ZPIP16742 2.5 0 1 CIRCULAR 0.015 RCP 20.5 20.6 None 0.4 32.4 31.9 None 47.5 46.2 None 53.7 51.3 None PIPE14519 C ZPIP17266 3.5 0 1 CIRCULAR 0.042 RCP 63.0 64.6 None 0.31 126.5 126.9 None 198.3 186.1 None 230.8 207.2 None PIPE14664 C PIP19098 1.5 0 1 CIRCULAR 0.031 HDPE 5.9 5.9 None 0.32 11.2 11.2 None 17.3 17.5 None 19.8 18.7 None PIPE14317 C ZPIP13957 2.5 0 1 CIRCULAR 0.013 PVC 18.1 18.0 None 0.38 28.7 28.6 None 42.2 42.1 None 47.7 47.4 None PIPE14503 C ZPIP14698 2.5 0 1 CIRCULAR 0.023 RCP 21.6 21.7 None 0.35 37.7 37.8 None 56.0 55.7 None 64.0 62.7 None PIPE14624 C ZPIP11843 1.5 0 1 CIRCULAR 0.022 RCP 18.1 13.7 None 0.87 30.5 16.0 None 45.5 18.2 None 51.7 15.6 None PIPE14772 C ZPIP11365 1.5 0 1 CIRCULAR 0.058 RCP 9.4 9.4 None 0.37 15.1 15.1 None 22.2 22.1 None 25.1 24.9 None PIPE14786 C ZPIP14728 8 0 1 CIRCULAR 0.015 RCP 419.0 412.1 None 0.37 596.8 611.2 None 914.2 910.5 None 1047.3 1081.8 None PIPE14214 C ZPIP10272 3 0 1 CIRCULAR 0.039 RCP 42.6 42.7 None 0.32 74.5 74.4 None 112.4 111.5 None 128.2 127.2 None PIPE14233 C ZPIP16862 2.5 0 1 CIRCULAR 0.015 RCP 19.1 19.2 None 0.38 30.2 29.5 None 44.1 43.1 None 49.9 48.1 None PIPE14587 C ZPIP11692 2 0 1 CIRCULAR 0.025 RCP 10.2 10.2 None 0.28 19.2 19.2 None 29.6 29.7 None 33.9 34.6 None PIPE14226 C ZPIP13069 1.5 0 1 CIRCULAR 0.005 RCP 2.1 2.1 None 0.29 3.5 3.5 None 5.1 5.1 None 5.8 7.0 None PIPE14696 C ZPIP10559 1.5 0 1 CIRCULAR 0.011 RCP 3.6 3.7 None 0.33 6.1 6.1 None 9.3 9.2 None 10.5 10.5 None PIPE14438 C ZPIP11019 3.5 0 1 CIRCULAR 0.029 RCP 47.4 47.4 None 0.27 87.8 88.3 None 137.1 144.9 None 159.1 162.8 None PIPE14645 C ZPIP11943 4.5 0 1 CIRCULAR 0.026 RCP 103.8 104.6 None 0.33 190.9 182.8 None 299.3 269.8 None 344.0 297.5 None PIPE14192 C ZPIP12478 2.5 0 1 CIRCULAR 0.017 RCP 19.1 19.2 None 0.36 30.3 30.3 None 44.4 44.2 None 50.2 49.8 None PIPE14211 C ZPIP16764 3.5 0 1 CIRCULAR 0.020 RCP 43.9 43.9 None 0.31 76.4 76.4 None 115.2 117.0 None 131.4 130.7 None PIPE14583 C ZPIP15514 2.25 0 1 CIRCULAR 0.030 RCP 15.3 15.3 None 0.28 29.1 28.9 None 44.8 44.6 None 51.5 50.0 None PIPE14313 C ZPIP10867 2 0 1 CIRCULAR 0.012 PVC 8.7 8.7 None 0.35 13.9 13.9 None 20.5 20.3 None 23.2 22.9 None CULV10252 C CUL061A 3 0 1 CIRCULAR 0.032 RCP 32.6 34.4 None 0.29 66.7 66.9 Both Upstream and Downstream 96.6 201.7 Both Upstream and Downstream 103.6 109.4 Both Upstream and Downstream PIPE14656 C ZPIP12264 3 0 1 CIRCULAR 0.036 RCP 36.0 36.0 None 0.28 65.0 65.0 None 101.0 101.2 None 116.2 116.0 None PIPE14189 C ZPIP12475 4 0 1 CIRCULAR 0.024 RCP 70.8 71.9 None 0.32 119.3 121.4 None 178.8 180.3 None 203.6 201.0 None PIPE14404 C ZPIP10937 2 0 1 CIRCULAR 0.034 RCP 14.3 14.3 None 0.34 22.9 22.4 None 33.6 34.5 None 38.0 37.9 None PIPE14586 C ZPIP17488 2 0 1 CIRCULAR 0.040 RCP 12.0 12.0 None 0.26 23.0 22.9 None 35.6 35.7 None 40.8 41.2 None PIPE14647 C ZPIP16027 4.5 0 1 CIRCULAR 0.026 RCP 105.6 106.9 None 0.34 194.6 186.8 None 305.0 266.2 None 350.6 288.5 None PIPE14702 C PIP16877 2 0 1 CIRCULAR 0.064 RCP 19.1 19.2 None 0.34 30.8 30.9 None 45.8 44.7 None 51.8 52.2 Downstream PIPE14787 C ZPIP11516 8 0 1 CIRCULAR 0.017 RCP 379.5 376.2 None 0.31 587.0 600.8 None 900.0 896.8 Upstream 1031.4 1086.8 Upstream PIPE14222 C ZPIP10381 1.5 0 1 CIRCULAR 0.005 RCP 2.1 2.1 None 0.29 3.4 3.4 None 5.2 5.9 None 5.8 6.6 None PIPE14453 C ZPIP14373 2.5 0 1 CIRCULAR 0.034 RCP 24.3 24.4 None 0.32 40.1 40.4 None 59.6 60.0 None 67.7 68.1 None PIPE14219 C ZPIP10278 2 0 1 CIRCULAR 0.059 RCP 13.1 13.1 None 0.24 27.4 27.2 None 43.2 42.3 None 50.0 48.8 None PIPE14230 C ZPIP10406 2 0 1 CIRCULAR 0.028 RCP 12.5 12.5 None 0.33 19.7 19.8 None 28.8 29.4 None 32.5 33.2 None PIPE14359 C ZPIP14060 2 0 1 CIRCULAR 0.019 RCP 10.4 10.4 None 0.34 16.4 16.5 None 24.1 23.8 None 27.1 27.3 None PIPE14538 C ZPIP15357 2.5 0 1 CIRCULAR 0.062 RCP 30.1 32.5 None 0.32 51.5 54.3 None 78.3 79.2 None 89.8 90.0 None PIPE14710 C ZPIP17155 3 0 1 CIRCULAR 0.059 RCP 50.8 50.7 None 0.31 90.9 90.3 None 137.6 130.0 None 157.2 142.8 None PIPE14752 C ZPIP14367 1.5 0 1 CIRCULAR 0.065 RCP 8.6 8.5 None 0.32 14.7 14.4 None 22.2 21.3 None 25.3 23.5 None PIPE14239 C ZPIP13087 2 0 1 CIRCULAR 0.018 RCP 8.4 8.4 None 0.28 15.2 15.1 None 23.2 23.1 None 26.5 26.4 None PIPE14354 C ZPIP14055 3 0 1 CIRCULAR 0.013 RCP 26.0 26.0 None 0.35 42.8 43.0 None 63.5 61.8 None 72.1 65.4 None PIPE14474 C ZPIP18034 1.5 0 1 CIRCULAR 0.072 RCP 0.0 12.8 Both Upstream and Downstream 0.45 0.0 16.0 Both Upstream and Downstream 0.0 20.7 Both Upstream and Downstream 0.0 24.5 Both Upstream and Downstream CULV10256 C ZCUL16823 4.5 0 1 CIRCULAR 0.039 RCP 232.1 195.3 None 0.51 279.6 269.2 None 423.5 322.5 None 457.0 334.4 None PIPE14798 C ZPIP17564 2 0 1 CIRCULAR 0.070 RCP 18.2 18.3 None 0.31 30.6 30.7 None 45.7 45.5 None 51.8 51.6 Downstream PIPE14202 C ZPIP12794 1.5 0 1 CIRCULAR 0.053 RCP 7.7 7.7 None 0.32 12.4 12.4 None 18.3 18.3 None 20.7 20.7 None PIPE14322 C ZPIP10869 2.5 0 1 CIRCULAR 0.024 PVC 20.4 20.4 None 0.32 32.4 32.3 None 47.6 47.4 None 53.8 53.4 None PIPE14549 C ZPIP17435 1.5 0 1 CIRCULAR 0.052 RCP 7.9 7.9 None 0.33 12.4 12.5 None 18.2 18.2 None 20.5 20.4 None PIPE14550 C ZPIP17436 1.5 0 1 CIRCULAR 0.042 RCP 7.1 7.1 None 0.33 11.2 11.2 None 16.3 16.3 None 18.4 18.4 None PIPE14591 C ZPIP17510 3 0 1 CIRCULAR 0.057 RCP 65.2 66.3 None 0.42 104.9 106.4 None 154.1 133.1 Downstream 174.8 135.9 None PIPE14753 C ZPIP17154 3 0 1 CIRCULAR 0.054 RCP 47.1 47.0 None 0.3 84.5 83.8 None 127.8 119.7 None 146.1 131.5 None PIPE14277 C ZPIP10818 2.5 0 1 CIRCULAR 0.070 RCP 25.4 26.9 None 0.25 47.5 49.6 None 73.3 80.9 None 84.3 91.3 None PIPE14335 C ZPIP13975 1.5 0 1 CIRCULAR 0.015 RCP 4.0 4.1 None 0.32 6.4 6.5 None 9.4 9.5 None 10.6 10.6 None PIPE14721 C ZPIP14723 1.5 0 1 CIRCULAR 0.050 RCP 7.2 7.2 None 0.31 11.4 11.4 None 16.7 18.5 None 18.9 19.9 Upstream PIPE14794 C ZPIP10596 1.5 0 1 CIRCULAR 0.024 RCP 4.7 4.7 None 0.29 7.9 7.9 None 12.0 12.0 None 13.7 13.6 None PIPE14217 C ZPIP12824 2.5 0 1 CIRCULAR 0.020 RCP 19.1 19.2 None 0.33 30.3 30.3 None 44.5 43.0 None 50.0 48.1 None PIPE14652 C ZPIP16597 1.5 0 1 CIRCULAR 0.071 RCP 7.7 7.7 None 0.28 13.4 13.4 None 20.4 20.4 None 23.3 23.2 None PIPE14611 C ZPIP15802 2 0 1 CIRCULAR 0.062 RCP 16.0 16.1 None 0.29 27.2 27.3 None 40.7 40.6 None 46.2 46.2 None PIPE14242 C ZPIP13092 1.5 0 1 CIRCULAR 0.049 RCP 7.1 7.1 None 0.3 11.4 11.4 None 16.8 16.8 None 19.0 19.0 None PIPE14399 C ZPIP14086 2.5 0 1 CIRCULAR 0.090 RCP 36.3 36.5 None 0.3 59.2 59.4 None 87.9 90.3 None 99.6 99.6 None PIPE14476 C ZPIP17165 2 0 1 CIRCULAR 0.044 RCP 11.0 11.0 None 0.23 21.6 21.6 None 33.5 33.4 None 38.4 38.4 None PIPE14520 C ZPIP11364 1.5 0 1 CIRCULAR 0.085 ACP 9.3 9.3 None 0.3 14.9 14.9 None 22.0 22.0 None 24.9 24.8 None PIPE14523 C ZPIP14916 4.5 0 1 CIRCULAR 0.023 RCP 95.5 101.1 None 0.34 184.2 154.9 None 285.7 217.0 None 330.0 243.0 None PIPE14564 C ZPIP11617 3.5 0 1 CIRCULAR 0.028 RCP 41.8 47.9 None 0.28 73.9 81.1 None 113.2 118.6 None 130.1 135.3 None PIPE14785 C ZPIP17086 2.5 0 1 CIRCULAR 0.090 RCP 36.2 36.5 None 0.3 59.1 59.4 None 87.8 88.4 None 99.5 99.6 None PIPE14216 C ZPIP12823 2.5 0 1 CIRCULAR 0.021 RCP 19.2 19.2 None 0.32 30.4 30.2 None 44.6 42.9 None 50.2 48.0 None PIPE14558 C ZPIP15369 1.5 0 1 CIRCULAR 0.036 RCP 6.1 6.2 None 0.31 9.7 9.7 None 14.2 14.2 None 16.0 16.0 None PIPE14547 C ZPIP15362 2 0 1 CIRCULAR 0.046 RCP 14.7 14.7 None 0.3 23.2 23.3 None 34.0 34.0 None 38.4 38.3 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 77 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14207 C ZPIP12800 1.5 0 1 CIRCULAR 0.010 RCP 2.0 2.0 None 0.19 3.1 3.1 None 4.4 4.4 None 5.0 8.3 None PIPE14231 C ZPIP10407 2 0 1 CIRCULAR 0.034 RCP 12.6 12.7 None 0.3 19.9 20.0 None 29.1 29.1 None 32.8 32.8 None PIPE14357 C ZPIP14058 3.5 0 1 CIRCULAR 0.003 RCP 18.8 20.3 None 0.36 28.2 30.1 None 37.7 39.8 None 41.8 44.3 None PIPE14534 C ZPIP11606 1.5 0 1 CIRCULAR 0.005 RCP 0.1 0.1 None 0.01 0.3 0.2 None 0.5 0.4 None 0.6 5.6 None PIPE14535 C ZPIP11607 3.5 0 1 CIRCULAR 0.036 RCP 44.0 50.1 None 0.26 78.2 85.6 None 119.9 124.6 None 137.9 149.4 None PIPE14701 C PIP19077 2 0 1 CIRCULAR 0.049 RCP 14.0 14.0 None 0.28 22.7 22.7 None 33.9 34.0 None 38.4 39.2 None PIPE14773 C ZPIP15464 1.5 0 1 CIRCULAR 0.040 RCP 5.6 5.6 None 0.27 10.4 10.1 None 15.9 15.5 None 18.2 16.4 None PIPE14527 C ZPIP11603 5 0 1 CIRCULAR 0.023 RCP 104.9 114.3 None 0.29 178.6 191.2 None 266.5 272.0 None 301.3 301.1 None PIPE14613 C ZPIP17562 1.5 0 1 CIRCULAR 0.071 RCP 8.3 8.3 None 0.3 13.0 13.1 None 18.9 19.0 None 21.3 21.4 None PIPE14252 C ZPIP16886 1.5 0 1 CIRCULAR 0.012 RCP 3.1 3.1 None 0.27 5.1 5.1 None 7.6 7.6 None 8.7 8.7 None CULV10249 C ZCUL060 4.5 0 1 CIRCULAR 0.038 RCP 131.0 175.0 Upstream 0.45 341.8 237.6 Upstream 379.1 282.5 Upstream 409.2 292.4 Upstream PIPE14462 C ZPIP11083 2.5 0 1 CIRCULAR 0.058 RCP 26.8 27.0 None 0.27 44.4 44.6 None 66.1 66.4 None 75.0 75.3 None PIPE14539 C ZPIP15358 3.5 0 1 CIRCULAR 0.031 RCP 41.7 47.7 None 0.27 73.9 80.8 None 113.0 118.7 None 130.0 133.8 None PIPE14705 C ZPIP12769 2 0 1 CIRCULAR 0.068 RCP 14.3 14.3 None 0.24 26.0 26.1 None 39.9 40.8 Downstream 45.6 44.5 Both Upstream and Downstream PIPE14220 C ZPIP16642 2 0 1 CIRCULAR 0.074 RCP 12.0 12.0 None 0.19 25.6 25.4 None 40.6 39.7 None 47.0 45.8 None PIPE14319 C ZPIP13959 2.5 0 1 CIRCULAR 0.024 PVC 18.1 18.1 None 0.28 28.8 28.7 None 42.4 42.2 None 47.9 47.6 None PIPE14491 C ZPIP17230 2 0 1 CIRCULAR 0.139 RCP 28.1 28.1 None 0.33 45.7 45.7 None 68.6 60.9 None 78.0 62.7 None PIPE14524 C ZPIP17431 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 3.4 None 0.0 9.8 Both Upstream and Downstream 0.0 10.2 Both Upstream and Downstream PIPE14718 C ZPIP11093 4.5 0 1 CIRCULAR 0.011 RCP 65.6 67.3 None 0.32 125.0 101.6 None 193.0 137.5 None 223.1 153.8 None PIPE14715 C ZPIP11080 2 0 1 CIRCULAR 0.029 RCP 10.3 10.1 None 0.26 17.4 17.1 None 26.2 25.1 None 29.8 27.9 None PIPE14567 C ZPIP15447 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.3 None 0.0 7.4 Both Upstream and Downstream 0.0 9.9 Both Upstream and Downstream PIPE14676 C PIP19111 1.5 0 1 CIRCULAR 0.093 RCP 7.7 7.7 None 0.24 13.4 13.4 None 20.2 20.2 None 23.0 23.0 None PIPE14271 C ZPIP13855 2.5 0 1 CIRCULAR 0.116 RCP 30.2 32.4 None 0.23 56.0 58.9 None 86.0 92.1 None 98.8 99.7 None PIPE14320 C ZPIP13960 1.5 0 1 CIRCULAR 0.007 PVC 2.4 2.4 None 0.28 3.7 3.7 None 5.4 5.4 None 6.1 6.1 None PIPE14674 C PIP16871 1.5 0 1 CIRCULAR 0.005 RCP 0.6 0.6 None 0.08 1.3 1.3 None 2.0 2.9 None 2.3 5.3 None PIPE14684 C 2 0 1 CIRCULAR 0.016 RCP 5.0 5.0 None 0.17 10.2 10.2 None 15.7 19.7 Downstream 18.2 20.6 Both Upstream and Downstream PIPE14777 C ZPIP12265 2 0 1 CIRCULAR 0.057 RCP 20.7 20.8 None 0.39 34.8 31.8 None 52.9 35.3 Upstream 60.3 38.3 Both Upstream and Downstream PIPE14281 C ZPIP10856 3 0 1 CIRCULAR 0.010 PVC 23.3 23.4 None 0.35 36.6 37.0 None 53.8 47.9 Both Upstream and Downstream 60.6 46.9 Both Upstream and Downstream PIPE14204 C ZPIP16759 2 0 1 CIRCULAR 0.039 RCP 6.7 6.6 None 0.15 14.5 14.5 None 23.2 25.4 None 26.9 30.7 None PIPE14283 C ZPIP10858 3 0 1 CIRCULAR 0.013 PVC 23.3 23.4 None 0.3 36.6 36.7 None 53.3 54.1 Downstream 60.1 53.6 Both Upstream and Downstream PIPE14284 C ZPIP10859 2.5 0 1 CIRCULAR 0.039 PVC 21.0 21.1 None 0.26 33.0 33.1 None 48.1 48.9 None 54.2 55.9 Downstream PIPE14369 C ZPIP10926 2 0 1 CIRCULAR 0.038 RCP 11.6 11.7 None 0.26 18.5 18.5 None 27.2 26.9 None 30.7 30.8 None PIPE14379 C ZPIP10930 2 0 1 CIRCULAR 0.050 RCP 13.1 13.1 None 0.26 21.0 20.5 None 30.9 31.2 None 35.0 34.6 None PIPE14521 C ZPIP14914 4.5 0 1 CIRCULAR 0.029 RCP 92.2 96.7 None 0.29 177.9 146.9 None 275.8 204.8 None 318.9 229.9 None PIPE14526 C ZPIP11602 1.5 0 1 CIRCULAR 0.249 RCP 0.0 0.0 None 0 0.3 8.1 None 0.3 21.1 None 0.3 36.1 None PIPE14266 C ZPIP13610 2 0 1 CIRCULAR 0.033 RCP 10.6 10.6 None 0.26 16.8 17.0 None 24.8 24.9 None 28.0 28.1 None PIPE14280 C ZPIP13932 2.5 0 1 CIRCULAR 0.025 PVC 13.9 13.7 None 0.21 22.5 22.7 None 33.7 42.5 Both Upstream and Downstream 38.5 44.7 Both Upstream and Downstream PIPE14321 C ZPIP13961 1.5 0 1 CIRCULAR 0.007 PVC 2.4 2.4 None 0.27 3.7 3.7 None 5.4 5.4 None 6.1 6.1 None PIPE14213 C ZPIP10271 3 0 1 CIRCULAR 0.069 RCP 38.9 39.0 None 0.22 68.6 68.5 None 103.8 103.1 None 118.5 117.4 None PIPE14256 C ZPIP13206 2.5 0 1 CIRCULAR 0.064 RCP 20.8 20.8 None 0.2 39.5 39.4 None 60.9 60.4 None 70.0 69.1 None PIPE14267 C ZPIP13611 2 0 1 CIRCULAR 0.005 RCP 4.1 4.2 None 0.25 6.6 6.7 None 9.8 9.8 None 11.0 11.0 None PIPE14440 C ZPIP14249 1.5 0 1 CIRCULAR 0.163 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 12.6 None 0.0 28.4 Upstream PIPE14464 C ZPIP11085 2.5 0 1 CIRCULAR 0.082 RCP 28.1 28.3 None 0.24 46.4 46.7 None 69.1 69.3 None 78.4 78.6 None PIPE14709 C ZPIP11074 4.5 0 1 CIRCULAR 0.013 RCP 65.7 67.3 None 0.29 125.0 101.5 None 192.9 137.4 None 223.1 153.7 None PIPE14289 C ZPIP13938 2.5 0 1 CIRCULAR 0.037 PVC 20.2 20.3 None 0.26 31.7 31.8 None 46.1 46.0 None 52.0 52.0 None PIPE14258 C ZPIP13208 2 0 1 CIRCULAR 0.034 RCP 10.1 10.1 None 0.24 16.3 16.3 None 24.1 24.0 None 27.3 27.2 None PIPE14388 C ZPIP10933 3.5 0 1 CIRCULAR 0.005 RCP 19.7 21.2 None 0.3 29.5 31.5 None 39.9 41.7 None 43.9 46.4 None PIPE14420 C ZPIP10945 2 0 1 CIRCULAR 0.056 RCP 13.2 13.2 None 0.25 21.1 20.5 None 31.0 31.4 None 35.0 35.0 None PIPE14631 C ZPIP11844 1.5 0 1 CIRCULAR 0.026 RCP 3.4 3.4 None 0.2 6.3 6.3 None 9.7 9.7 None 11.1 11.1 None PIPE14697 C ZPIP10560 1.5 0 1 CIRCULAR 0.015 RCP 2.8 2.8 None 0.22 4.7 4.8 None 7.2 7.2 None 8.2 8.2 None PIPE14478 C ZPIP14405 2 0 1 CIRCULAR 0.046 ACP 11.7 11.8 None 0.24 18.8 18.9 None 27.8 27.7 None 31.4 31.2 None PIPE14479 C ZPIP14406 2 0 1 CIRCULAR 0.046 ACP 11.7 11.8 None 0.24 18.8 18.8 None 27.7 27.7 None 31.4 31.2 None PIPE14285 C ZPIP13934 2.5 0 1 CIRCULAR 0.053 PVC 21.1 21.2 None 0.22 33.0 33.2 None 48.1 50.2 None 54.2 59.8 None PIPE14542 C ZPIP17434 2.5 0 1 CIRCULAR 0.014 RCP 6.4 10.0 None 0.2 14.0 18.0 None 22.3 27.2 None 26.0 31.1 None PIPE14774 C ZPIP15465 1.5 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.5 None 0.0 5.3 Upstream PIPE14254 C ZPIP10464 2.5 0 1 CIRCULAR 0.059 RCP 17.9 17.9 None 0.18 34.9 34.8 None 54.2 53.6 None 62.4 61.5 None PIPE14396 C ZPIP10935 3.5 0 1 CIRCULAR 0.010 RCP 23.6 25.1 None 0.25 36.8 38.8 None 52.4 54.6 None 58.8 61.2 None CULV10255 C CUL16858 3.5 6 1 RECT_CLOSED 0.012 RCP 77.0 78.2 None 0.28 125.1 126.8 None 182.2 186.4 None 205.9 168.6 None PIPE14722 C ZPIP14725 1.5 0 1 CIRCULAR 0.054 RCP 5.1 5.1 None 0.21 8.2 8.2 None 11.9 13.8 None 13.5 15.0 None PIPE14454 C ZPIP14374 2 0 1 CIRCULAR 0.073 RCP 12.6 12.6 None 0.21 21.4 21.4 None 32.1 32.1 None 36.5 36.5 None PIPE14698 C ZPIP13371 1.5 0 1 CIRCULAR 0.047 RCP 4.7 4.8 None 0.21 7.9 8.0 None 12.0 12.0 None 13.7 13.6 None PIPE14754 C ZPIP17156 2.5 0 1 CIRCULAR 0.080 RCP 26.3 26.3 None 0.23 48.2 48.0 None 73.1 65.0 None 83.5 69.8 None PIPE14758 C ZPIP14393 3 0 1 CIRCULAR 0.126 RCP 50.8 50.7 None 0.21 91.0 90.3 None 137.7 130.1 None 157.3 142.9 None PIPE14686 C 1.5 0 1 CIRCULAR 0.013 RCP 0.0 0.0 None 0 0.1 0.1 None 0.1 5.2 Both Upstream and Downstream 0.1 7.1 Both Upstream and Downstream PIPE14340 C ZPIP13980 2 0 1 CIRCULAR 0.243 RCP 25.8 25.9 None 0.23 42.6 43.0 None 63.2 60.8 None 71.8 64.5 None PIPE14364 C ZPIP14063 1.5 0 1 CIRCULAR 0.021 RCP 3.4 3.4 None 0.22 5.4 5.4 None 7.8 7.9 None 8.8 8.9 None PIPE14208 C ZPIP12801 1.5 0 1 CIRCULAR 0.222 RCP 12.8 12.8 None 0.26 20.7 19.6 None 30.9 27.9 None 35.0 28.5 None PIPE14209 C ZPIP12808 1.5 0 1 CIRCULAR 0.222 RCP 12.8 12.8 None 0.26 20.7 19.6 None 30.8 27.9 None 35.0 28.5 None PIPE14268 C ZPIP13767 2.5 0 1 CIRCULAR 0.019 RCP 12.4 12.4 None 0.22 19.5 19.5 None 28.4 28.4 None 32.0 32.0 None PIPE14269 C ZPIP13768 2.5 0 1 CIRCULAR 0.019 RCP 12.4 12.4 None 0.22 19.5 19.5 None 28.4 28.4 None 32.0 32.0 None PIPE14316 C ZPIP13956 2 0 1 CIRCULAR 0.005 PVC 3.5 3.5 None 0.22 5.5 5.5 None 8.1 8.1 None 9.1 9.1 None PIPE14358 C ZPIP14059 3.5 0 1 CIRCULAR 0.007 RCP 20.1 21.7 None 0.26 30.2 32.2 None 40.5 42.8 None 44.9 47.4 None PIPE14439 C ZPIP11021 1.5 0 1 CIRCULAR 0.062 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 11.0 None 0.0 15.0 Downstream PIPE14450 C ZPIP14368 3 0 1 CIRCULAR 0.085 RCP 40.6 40.5 None 0.21 72.7 72.1 None 109.9 100.8 None 125.6 110.0 None PIPE14782 C ZPIP14376 3 0 1 CIRCULAR 0.057 RCP 32.4 32.6 None 0.2 53.5 53.7 None 79.6 79.8 None 90.4 90.5 None PIPE14609 C ZPIP15800 2 0 1 CIRCULAR 0.038 RCP 7.8 7.8 None 0.18 14.2 14.2 None 21.7 21.7 None 24.8 24.8 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 78 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14614 C ZPIP17563 1.5 0 1 CIRCULAR 0.052 RCP 5.2 5.2 None 0.22 8.1 8.2 None 11.8 11.9 None 13.3 13.4 None PIPE14575 C ZPIP15470 2 0 1 CIRCULAR 0.005 HDPE 3.3 3.3 None 0.21 5.2 5.2 None 7.6 7.6 None 8.6 8.6 None PIPE14576 C ZPIP15471 2 0 1 CIRCULAR 0.005 HDPE 3.4 3.3 None 0.21 5.4 5.2 None 7.8 7.6 None 8.6 8.6 None PIPE14606 C ZPIP11833 1.5 0 1 CIRCULAR 0.022 RCP 0.0 0.0 None 0 0.0 5.8 None 0.0 5.9 Both Upstream and Downstream 0.0 8.6 Both Upstream and Downstream PIPE14699 C ZPIP13374 1.5 0 1 CIRCULAR 0.200 RCP 8.9 9.0 None 0.19 15.0 15.1 None 22.8 22.7 None 26.0 25.9 None PIPE14761 C ZPIP17166 4.5 0 1 CIRCULAR 0.005 RCP 22.9 22.9 None 0.16 44.5 44.3 None 69.2 68.7 None 80.5 79.9 None PIPE14241 C ZPIP13089 2 0 1 CIRCULAR 0.019 RCP 4.9 4.9 None 0.16 9.5 9.5 None 14.7 14.7 None 16.9 16.9 None PIPE14304 C ZPIP10865 2.5 0 1 CIRCULAR 0.020 PVC 13.1 13.8 None 0.24 19.6 20.7 None 26.8 28.1 None 29.8 30.9 None PIPE14307 C ZPIP13950 2.5 0 1 CIRCULAR 0.019 PVC 13.1 13.8 None 0.24 19.6 20.7 None 26.8 28.1 None 29.8 30.9 None PIPE14514 C ZPIP14719 2.5 0 1 CIRCULAR 0.091 RCP 23.4 23.5 None 0.19 39.0 39.1 None 58.6 58.6 None 66.6 66.6 None PIPE14244 C ZPIP16884 2 0 1 CIRCULAR 0.031 RCP 8.2 8.2 None 0.2 12.9 13.0 None 18.9 18.9 None 21.3 21.3 None PIPE14487 C ZPIP14679 2 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 10.8 Upstream 0.1 18.7 Both Upstream and Downstream PIPE14223 C ZPIP10382 2 0 1 CIRCULAR 0.062 RCP 11.9 11.9 None 0.21 18.8 18.7 None 27.6 26.0 None 31.2 29.1 None PIPE14675 C PIP19110 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 2.3 None 0.0 3.9 None PIPE14683 C ZPIP11942 4.5 0 1 CIRCULAR 0.084 RCP 103.3 104.1 None 0.18 189.8 181.8 None 297.8 262.5 None 342.2 298.4 None PIPE14348 C ZPIP13985 1.5 0 1 CIRCULAR 0.348 RCP 11.0 11.0 None 0.18 20.0 21.4 None 30.3 28.0 None 34.7 31.4 None PIPE14349 C ZPIP13986 10 0 1 CIRCULAR 0.049 CMP 346.4 368.7 None 0.19 605.6 620.4 None 926.9 923.3 None 1061.5 1023.5 None PIPE14651 C ZPIP12232 1.5 0 1 CIRCULAR 0.146 RCP 6.6 6.6 None 0.16 11.8 11.8 None 17.8 17.8 None 20.3 20.3 None PIPE14739 C PIP20038 1.5 0 1 CIRCULAR 0.180 RCP 6.9 6.9 None 0.15 12.9 12.9 None 19.7 19.7 None 22.5 22.5 None PIPE14232 C ZPIP10408 1.5 0 1 CIRCULAR 0.011 RCP 0.1 0.1 None 0.01 0.1 0.4 None 0.1 4.1 None 0.2 5.4 None PIPE14437 C ZPIP14245 3 0 1 CIRCULAR 0.230 RCP 36.4 36.4 None 0.11 66.3 66.2 None 102.4 133.8 None 119.9 160.2 Upstream PIPE14536 C ZPIP15355 1.5 0 1 CIRCULAR 0.132 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 18.9 None PIPE14670 C PIP19106 1.5 0 1 CIRCULAR 0.005 RCP 1.0 1.0 None 0.13 1.8 1.8 None 2.8 2.8 None 3.2 3.7 None PIPE14771 C ZPIP11345 1.5 0 1 CIRCULAR 0.020 RCP 2.8 2.8 None 0.19 4.5 4.5 None 6.5 6.5 None 7.4 7.4 None PIPE14830 C ZPIP16016 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 6.4 None 0.0 7.0 None PIPE14525 C ZPIP11601 1.5 0 1 CIRCULAR 0.040 RCP 0.0 0.3 None 0.01 2.7 6.1 None 4.4 7.4 None 4.7 10.3 None PIPE14713 C ZPIP14378 1.5 0 1 CIRCULAR 0.054 RCP 4.1 4.1 None 0.17 7.0 7.0 None 10.4 10.4 None 11.9 11.9 None PIPE14763 C ZPIP14408 1.5 0 1 CIRCULAR 0.316 ACP 10.1 10.1 None 0.17 16.9 16.9 None 25.2 25.3 None 28.7 28.7 None PIPE14249 C ZPIP13139 2 0 1 CIRCULAR 0.027 RCP 6.8 6.8 None 0.18 10.7 10.8 None 15.7 15.7 None 17.7 17.7 None PIPE14279 C ZPIP13931 3 0 1 CIRCULAR 0.031 PVC 26.9 27.2 None 0.23 42.6 42.6 None 62.4 53.9 Both Upstream and Downstream 70.4 55.7 Both Upstream and Downstream PIPE14332 C ZPIP13968 2 0 1 CIRCULAR 0.007 PVC 3.5 3.5 None 0.18 5.5 5.5 None 8.1 8.1 None 9.2 9.2 None PIPE14410 C ZPIP14095 1.5 0 1 CIRCULAR 0.016 RCP 2.5 2.5 None 0.19 3.9 3.9 None 5.6 5.6 None 6.3 6.3 None PIPE14827 C ZPIP17621 3.5 0 1 CIRCULAR 0.026 RCP 29.1 29.1 None 0.18 51.7 51.9 None 83.2 84.8 None 97.2 77.9 None PIPE14716 C ZPIP14380 2.5 0 1 CIRCULAR 0.133 RCP 26.3 26.3 None 0.18 48.2 48.0 None 73.1 65.0 None 83.5 69.9 None PIPE14759 C ZPIP14400 1.5 0 1 CIRCULAR 0.343 RCP 10.0 9.9 None 0.16 16.9 16.9 None 25.2 25.3 None 28.6 28.7 None PIPE14299 C ZPIP13945 1.5 0 1 CIRCULAR 0.078 PVC 5.3 5.3 None 0.18 8.3 8.3 None 12.0 12.0 None 13.5 13.5 None PIPE14422 C ZPIP14104 1.5 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.3 None 0.1 1.6 None 0.1 3.7 None PIPE14667 C PIP16862 1.5 0 1 CIRCULAR 0.018 HDPE 1.6 1.6 None 0.11 3.6 3.6 None 5.7 5.7 None 6.6 6.6 None PIPE14799 C ZPIP17567 3 0 1 CIRCULAR 0.076 RCP 52.9 47.4 None 0.26 88.2 69.8 None 131.4 83.9 None 149.0 85.2 None PIPE14828 C ZPIP11936 2 0 1 CIRCULAR 0.028 RCP 3.4 3.4 None 0.09 5.8 5.8 None 8.8 18.1 Upstream 10.1 17.3 Upstream PIPE14186 C ZPIP12383 2.5 0 1 CIRCULAR 0.074 RCP 19.0 19.1 None 0.17 30.2 30.3 None 44.2 44.3 None 49.9 49.9 None PIPE14400 C ZPIP14087 3.5 0 1 CIRCULAR 0.063 RCP 41.4 41.5 None 0.16 68.9 69.4 None 102.1 104.0 None 115.9 113.0 None PIPE14559 C ZPIP15370 1.5 0 1 CIRCULAR 0.013 RCP 2.1 2.1 None 0.17 3.3 3.3 None 4.8 4.8 None 5.4 5.4 None PIPE14685 C 2 0 1 CIRCULAR 0.072 RCP 7.2 7.2 None 0.12 14.9 15.1 None 23.3 25.6 Both Upstream and Downstream 27.2 27.6 Both Upstream and Downstream PIPE14750 C ZPIP11073 4.5 0 1 CIRCULAR 0.031 RCP 65.7 67.3 None 0.19 125.0 101.6 None 193.0 137.6 None 223.2 153.9 None PIPE14483 C ZPIP14676 2.5 0 1 CIRCULAR 0.087 RCP 18.5 18.5 None 0.15 31.2 31.2 None 47.1 47.1 None 53.6 53.6 None PIPE14234 C ZPIP16863 1.5 0 1 CIRCULAR 0.015 RCP 2.2 2.2 None 0.17 3.4 3.4 None 5.0 5.0 None 5.6 5.6 None PIPE14643 C ZPIP15989 2.5 0 1 CIRCULAR 0.055 RCP 16.0 17.7 None 0.18 24.0 26.4 None 33.5 36.8 None 37.6 40.8 None PIPE14236 C ZPIP10410 1.5 0 1 CIRCULAR 0.015 RCP 2.2 2.2 None 0.17 3.4 3.4 None 5.0 4.9 None 5.5 5.4 None PIPE14295 C ZPIP13941 2 0 1 CIRCULAR 0.034 PVC 6.9 6.9 None 0.16 10.7 10.7 None 15.5 15.7 None 17.4 17.5 None PIPE14337 C ZPIP13977 2 0 1 CIRCULAR 0.012 RCP 3.9 4.0 None 0.16 6.2 6.3 None 9.2 9.5 None 10.4 10.5 None PIPE14518 C ZPIP14848 2 0 1 CIRCULAR 0.275 RCP 16.3 16.3 None 0.14 29.1 29.1 None 44.1 44.1 None 50.4 50.4 None PIPE14641 C ZPIP11904 2.5 0 1 CIRCULAR 0.047 RCP 11.3 11.3 None 0.13 21.3 21.3 None 32.8 32.7 None 37.6 37.5 None PIPE14228 C ZPIP13071 2 0 1 CIRCULAR 0.029 RCP 6.6 6.7 None 0.17 10.6 10.6 None 15.7 14.0 None 17.7 15.9 None PIPE14238 C ZPIP13086 1.5 0 1 CIRCULAR 0.038 RCP 3.1 3.1 None 0.15 5.0 5.0 None 7.4 7.4 None 8.4 8.4 None PIPE14255 C ZPIP13202 2.5 0 1 CIRCULAR 0.062 RCP 15.7 15.7 None 0.15 25.2 25.3 None 37.3 37.2 None 42.2 42.1 None PIPE14397 C ZPIP10936 3.5 0 1 CIRCULAR 0.033 RCP 28.6 30.3 None 0.16 45.1 47.4 None 64.5 67.3 None 72.6 75.8 None PIPE14411 C ZPIP14096 1.5 0 1 CIRCULAR 0.021 RCP 2.5 2.5 None 0.16 3.9 3.9 None 5.6 5.6 None 6.3 6.3 None PIPE14449 C ZPIP14365 1.5 0 1 CIRCULAR 0.198 RCP 0.0 0.4 None 0.01 0.0 8.6 Both Upstream and Downstream 0.0 15.9 Both Upstream and Downstream 0.0 19.0 Both Upstream and Downstream PIPE14498 C ZPIP11249 2 0 1 CIRCULAR 0.378 RCP 20.4 20.4 None 0.15 32.7 32.6 None 48.3 46.7 None 54.7 56.6 None PIPE14529 C ZPIP15349 1.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.4 0.4 None 0.6 1.0 None 1.0 6.6 None PIPE14623 C ZPIP11841 2 0 1 CIRCULAR 0.036 RCP 19.4 15.0 None 0.35 32.7 17.4 None 48.7 19.9 None 55.5 17.8 None PIPE14831 C ZPIP16015 2 0 1 CIRCULAR 0.035 RCP 5.2 5.2 None 0.12 8.8 8.8 None 13.2 16.5 None 15.0 17.3 None PIPE14393 C ZPIP14083 3.5 0 1 CIRCULAR 0.023 RCP 23.5 25.1 None 0.16 36.8 38.8 None 52.0 54.4 None 58.3 61.0 None PIPE14395 C ZPIP10934 3.5 0 1 CIRCULAR 0.023 RCP 23.5 25.1 None 0.16 36.8 38.9 None 52.1 54.7 None 58.6 61.3 None PIPE14398 C ZPIP14085 2 0 1 CIRCULAR 0.092 RCP 12.3 12.7 None 0.19 17.8 18.8 None 24.0 25.0 None 26.6 27.3 None PIPE14568 C ZPIP15462 2 0 1 CIRCULAR 0.033 RCP 5.6 5.6 None 0.14 10.4 10.1 None 15.9 15.4 None 18.2 16.3 None PIPE14711 C ZPIP11076 1.5 0 1 CIRCULAR 0.077 RCP 3.3 3.3 None 0.11 6.5 6.5 None 10.2 10.2 None 11.7 11.7 None PIPE14747 C ZPIP17124 3 0 1 CIRCULAR 0.041 RCP 15.6 15.6 None 0.12 30.1 30.1 None 47.0 49.3 None 54.3 53.9 Upstream PIPE14368 C ZPIP10925 2.5 0 1 CIRCULAR 0.037 RCP 11.3 11.3 None 0.14 18.5 18.5 None 27.5 26.3 None 31.2 30.5 None PIPE14471 C ZPIP14392 3 0 1 CIRCULAR 0.302 RCP 50.8 50.7 None 0.14 91.0 90.3 None 137.7 130.1 None 157.3 142.9 None PIPE14599 C ZPIP11832 1.5 0 1 CIRCULAR 0.027 RCP 0.0 0.0 None 0 0.0 3.3 None 0.0 6.9 Both Upstream and Downstream 0.0 6.8 Both Upstream and Downstream PIPE14746 C ZPIP14243 1.5 0 1 CIRCULAR 0.043 RCP 1.9 1.9 None 0.09 3.1 3.1 None 4.6 8.2 None 5.2 8.6 Downstream PIPE14243 C ZPIP16883 2 0 1 CIRCULAR 0.063 RCP 8.2 8.2 None 0.15 12.9 13.0 None 18.9 18.9 None 21.3 21.3 None PIPE14245 C ZPIP10440 1.5 0 1 CIRCULAR 0.022 RCP 2.2 2.2 None 0.14 3.5 3.6 None 5.3 5.3 None 6.0 6.0 None PIPE14263 C ZPIP10684 2 0 1 CIRCULAR 0.158 RCP 11.1 11.1 None 0.12 19.7 19.7 None 29.9 29.8 None 34.1 34.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 79 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14394 C ZPIP14084 3.5 0 1 CIRCULAR 0.026 RCP 23.5 25.1 None 0.16 36.8 38.8 None 52.1 54.5 None 58.4 61.1 None PIPE14443 C ZPIP14359 4.5 0 1 CIRCULAR 0.045 RCP 67.7 69.0 None 0.17 129.0 104.7 None 199.6 142.2 None 230.8 159.5 None PIPE14468 C ZPIP14389 2 0 1 CIRCULAR 0.009 RCP 2.1 2.1 None 0.1 4.4 4.4 None 6.9 6.9 None 8.0 8.0 None PIPE14588 C ZPIP11700 3.5 0 1 CIRCULAR 0.030 RCP 25.6 27.1 None 0.16 40.4 42.2 None 57.5 59.8 None 64.6 67.1 None PIPE14608 C ZPIP15799 1.5 0 1 CIRCULAR 0.041 RCP 0.0 0.0 None 0 0.0 6.7 None 0.0 8.9 Both Upstream and Downstream 0.0 8.1 Both Upstream and Downstream PIPE14762 C ZPIP11095 2 0 1 CIRCULAR 0.159 ACP 12.9 13.0 None 0.14 20.7 20.7 None 30.5 30.5 None 34.5 34.3 None PIPE14455 C ZPIP14375 2 0 1 CIRCULAR 0.074 RCP 8.0 8.0 None 0.13 13.4 13.4 None 20.1 20.2 None 22.8 22.8 None PIPE14796 C ZPIP14717 1.5 0 1 CIRCULAR 0.242 RCP 7.3 7.3 None 0.14 11.6 11.6 None 17.2 17.1 None 19.4 19.4 None PIPE14315 C ZPIP13955 2 0 1 CIRCULAR 0.013 PVC 3.5 3.5 None 0.13 5.5 5.5 None 8.1 8.1 None 9.2 9.2 None PIPE14501 C ZPIP11252 3 0 1 CIRCULAR 0.297 RCP 45.6 45.7 None 0.13 77.5 77.7 None 116.0 114.5 None 132.2 131.6 None PIPE14570 C ZPIP11666 2 0 1 CIRCULAR 0.011 HDPE 3.0 3.3 None 0.14 4.8 5.2 None 7.1 7.6 None 8.0 8.5 None PIPE14714 C ZPIP11079 2 0 1 CIRCULAR 0.115 RCP 10.3 10.1 None 0.13 17.4 17.1 None 26.2 25.1 None 29.8 27.9 None PIPE14770 C ZPIP17267 1.5 0 1 CIRCULAR 0.111 RCP 4.8 4.8 None 0.14 7.6 7.6 None 11.2 11.2 None 12.6 12.6 None FLOW10068 C 4 10 1 TRAPEZOIDAL 0.016 RCP 262.8 274.7 None 0.12 461.4 470.0 None 760.5 705.6 None 942.6 808.4 None PIPE14760 C ZPIP17164 2 0 1 CIRCULAR 0.377 RCP 14.2 14.2 None 0.1 27.2 27.1 None 41.9 41.9 None 48.1 48.0 None PIPE14265 C ZPIP10686 3.5 0 1 CIRCULAR 0.071 RCP 33.9 34.1 None 0.13 55.7 56.0 None 82.8 82.4 None 94.0 92.4 None PIPE14290 C ZPIP13939 1.5 0 1 CIRCULAR 0.076 PVC 3.9 3.9 None 0.13 6.0 6.1 None 8.8 8.8 None 9.9 9.9 None PIPE14303 C ZPIP10864 1.5 0 1 CIRCULAR 0.079 PVC 3.9 3.9 None 0.13 6.1 6.1 None 8.9 8.9 None 10.0 10.0 None PIPE14604 C ZPIP17559 1.5 0 1 CIRCULAR 0.042 RCP 0.0 0.0 None 0 0.0 3.5 None 0.0 7.1 Downstream 0.0 7.3 Downstream PIPE14700 C ZPIP11243 1.5 0 1 CIRCULAR 0.051 RCP 2.8 2.8 None 0.12 4.6 4.7 None 7.0 7.0 None 7.9 7.9 None PIPE14765 C ZPIP11246 1.5 0 1 CIRCULAR 0.050 RCP 2.8 2.8 None 0.12 4.7 4.7 None 7.0 7.0 None 7.9 7.9 None PIPE14237 C ZPIP13085 1.5 0 1 CIRCULAR 0.038 RCP 2.5 2.5 None 0.12 4.0 4.0 None 5.9 5.9 None 6.7 6.7 None PIPE14240 C ZPIP13088 2 0 1 CIRCULAR 0.051 RCP 4.9 4.9 None 0.1 9.5 9.5 None 14.7 14.7 None 16.9 16.9 None PIPE14264 C ZPIP10685 1.5 0 1 CIRCULAR 0.077 RCP 3.6 3.6 None 0.12 5.8 5.8 None 8.5 8.5 None 9.6 9.6 None PIPE14331 C ZPIP10875 1.5 0 1 CIRCULAR 0.034 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 6.5 Both Upstream and Downstream 0.0 6.3 Both Upstream and Downstream PIPE14446 C ZPIP17151 4.5 0 1 CIRCULAR 0.062 RCP 67.7 69.0 None 0.14 129.0 104.7 None 199.5 142.2 None 230.8 159.4 None PIPE14459 C ZPIP17158 2 0 1 CIRCULAR 0.041 RCP 5.2 5.2 None 0.11 8.8 8.8 None 13.2 13.2 None 15.0 15.0 None PIPE14463 C ZPIP11084 2.5 0 1 CIRCULAR 0.333 RCP 28.1 28.3 None 0.12 46.4 46.7 None 69.0 69.3 None 78.4 78.6 None PIPE14469 C ZPIP14390 1.5 0 1 CIRCULAR 0.054 RCP 2.1 2.1 None 0.09 4.4 4.4 None 7.0 7.0 None 8.0 8.0 None PIPE14678 C ZPIP20000 2 0 1 CIRCULAR 0.429 RCP 15.4 16.8 None 0.13 27.8 29.6 None 43.4 42.9 None 50.1 48.3 None PIPE14191 C ZPIP12477 4 0 1 CIRCULAR 0.014 RCP 20.5 20.6 None 0.12 32.6 33.0 None 48.4 48.3 None 54.6 54.1 None PIPE14225 C ZPIP13068 1.5 0 1 CIRCULAR 0.063 RCP 3.1 3.1 None 0.12 5.1 5.1 None 7.6 7.6 None 8.6 8.6 Downstream PIPE14385 C ZPIP14078 1.5 0 1 CIRCULAR 0.063 RCP 0.0 0.0 None 0 0.1 0.0 None 0.1 8.1 None 0.1 8.6 None PIPE14690 C PIP19097 1.5 0 1 CIRCULAR 0.022 HDPE 1.4 1.4 None 0.09 2.5 2.5 None 3.9 4.6 None 4.4 5.0 None PIPE14328 C ZPIP17066 2 0 1 CIRCULAR 0.063 PVC 6.9 6.9 None 0.12 10.7 10.8 None 15.6 15.6 None 17.5 17.5 None PIPE14375 C ZPIP14071 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.0 None 0.0 4.4 None PIPE14378 C ZPIP10929 2 0 1 CIRCULAR 0.156 RCP 12.3 12.7 None 0.14 17.8 18.8 None 24.0 25.0 None 26.6 27.3 None PIPE14447 C ZPIP17152 4.5 0 1 CIRCULAR 0.065 RCP 66.5 67.9 None 0.14 126.7 102.6 None 195.6 138.9 None 226.1 155.5 None PIPE14769 C ZPIP14722 1.5 0 1 CIRCULAR 0.506 RCP 8.3 8.3 None 0.11 13.7 13.7 None 20.4 20.4 None 23.2 23.2 None PIPE14431 C ZPIP14208 3.5 0 1 CIRCULAR 0.135 RCP 41.4 41.5 None 0.11 69.2 69.4 None 102.8 103.9 None 116.6 112.5 None PIPE14578 C ZPIP11667 2 0 1 CIRCULAR 0.015 RCP 3.0 3.3 None 0.12 4.8 5.2 None 7.1 7.6 None 8.0 8.5 None FLOW10079 C 4 10 1 TRAPEZOIDAL 0.031 RCP 314.6 334.4 None 0.1 551.7 560.1 None 853.6 867.8 None 976.7 987.4 None PIPE14367 C ZPIP14066 3.5 0 1 CIRCULAR 0.084 RCP 31.8 33.6 None 0.12 50.1 52.5 None 71.8 74.8 None 80.8 85.1 None PIPE14448 C ZPIP17153 4.5 0 1 CIRCULAR 0.076 RCP 66.5 67.9 None 0.13 126.7 102.7 None 195.6 139.0 None 226.2 155.6 None PIPE14663 C PIP19096 1.5 0 1 CIRCULAR 0.224 RCP 4.5 4.5 None 0.09 8.8 8.8 None 13.5 13.9 None 15.5 14.6 None FLOW10065 C 4 10 1 TRAPEZOIDAL 0.061 RCP 398.8 422.3 None 0.09 696.8 658.6 None 1176.6 1200.3 None 1346.6 1343.3 None PIPE14741 C PIP20043 2.5 0 1 CIRCULAR 0.034 RCP 6.6 6.7 None 0.09 12.5 12.6 None 19.2 19.3 None 22.0 22.1 None PIPE14275 C ZPIP13859 2.5 0 1 CIRCULAR 0.417 RCP 21.4 22.6 None 0.09 40.1 41.6 None 61.9 63.9 None 71.2 73.3 None PIPE14371 C ZPIP14067 1.5 0 1 CIRCULAR 0.052 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.4 None 0.2 6.7 None PIPE14541 C ZPIP17433 2.5 0 1 CIRCULAR 0.074 RCP 6.4 10.0 None 0.02 14.0 17.9 None 22.2 27.0 None 25.9 30.9 None PIPE14607 C ZPIP11834 1.5 0 1 CIRCULAR 0.029 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.2 None 0.0 5.1 None PIPE14725 C ZPIP15443 2.5 0 1 CIRCULAR 0.105 RCP 11.6 11.7 None 0.09 21.0 21.1 None 32.3 32.3 None 37.3 37.3 None PIPE14333 C ZPIP10878 1.5 0 1 CIRCULAR 0.084 RCP 3.1 3.1 None 0.1 5.0 5.0 None 7.3 7.3 None 8.2 8.2 None PIPE14344 C ZPIP10882 1.5 0 1 CIRCULAR 0.384 RCP 6.3 6.3 None 0.1 10.5 10.4 None 15.5 15.8 None 17.6 17.7 Downstream CULV10251 C ZCUL049 3 0 1 CIRCULAR 0.130 RCP 20.6 21.4 None 0.09 37.2 38.3 None 55.8 56.5 None 63.7 64.2 Upstream PIPE14666 C PIP16861 1.5 0 1 CIRCULAR 0.010 HDPE 1.0 1.0 None 0.1 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None PIPE14543 C ZPIP11608 1.5 0 1 CIRCULAR 0.011 RCP 1.1 1.1 None 0.1 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None PIPE14605 C ZPIP17560 1.5 0 1 CIRCULAR 0.067 RCP 0.0 0.0 None 0 0.0 4.1 None 0.0 6.5 Both Upstream and Downstream 0.0 7.0 Both Upstream and Downstream PIPE14633 C ZPIP11846 1.5 0 1 CIRCULAR 0.008 RCP 0.9 0.9 None 0.1 1.4 1.4 None 2.1 2.1 None 2.4 2.4 None PIPE14717 C ZPIP11087 2 0 1 CIRCULAR 0.041 RCP 3.3 3.3 None 0.07 6.5 6.5 None 10.1 10.1 None 11.6 11.7 None PIPE14740 C PIP20039 2.5 0 1 CIRCULAR 0.043 RCP 6.8 6.8 None 0.08 12.7 12.7 None 19.5 19.5 None 22.3 22.3 None PIPE14829 C ZPIP11936 2 0 1 CIRCULAR -999.000 RCP 20.1 20.1 None 0.08 37.1 37.1 None 61.1 56.9 Downstream 71.2 62.5 Downstream PIPE14301 C ZPIP13947 1.5 0 1 CIRCULAR 0.139 PVC 3.9 3.9 None 0.1 6.1 6.1 None 8.8 8.8 None 9.9 9.9 None PIPE14490 C ZPIP17229 1.5 0 1 CIRCULAR 0.422 RCP 5.9 5.9 None 0.09 10.0 10.0 None 15.1 15.1 None 17.2 17.3 None PIPE14282 C ZPIP10857 1.5 0 1 CIRCULAR 0.077 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 6.5 Downstream 0.0 7.1 Downstream PIPE14298 C ZPIP13944 1.5 0 1 CIRCULAR 0.027 PVC 1.6 1.6 None 0.09 2.6 2.6 None 3.7 3.7 None 4.1 4.1 None PIPE14323 C ZPIP10870 1.5 0 1 CIRCULAR 0.049 PVC 2.2 2.2 None 0.1 3.5 3.5 None 5.1 5.1 None 5.7 5.7 None PIPE14338 C ZPIP13978 2 0 1 CIRCULAR 0.070 RCP 3.9 4.0 None 0.07 6.2 6.3 None 9.1 13.4 None 10.3 14.5 None PIPE14626 C ZPIP15813 1.5 0 1 CIRCULAR 0.057 RCP 0.0 0.0 None 0 0.0 0.8 None 0.0 5.8 Downstream 0.0 6.0 Downstream PIPE14435 C ZPIP10998 2.5 0 1 CIRCULAR 0.058 RCP 4.6 6.9 None 0.07 10.3 13.0 None 16.6 20.1 None 19.4 23.1 None PIPE14504 C ZPIP14699 2.5 0 1 CIRCULAR 0.448 RCP 21.6 21.7 None 0.08 37.7 37.9 None 56.0 55.8 None 64.1 62.7 None PIPE14361 C ZPIP10923 2 0 1 CIRCULAR 0.401 RCP 11.7 11.8 None 0.08 18.7 18.6 None 27.4 27.0 None 30.9 31.5 None PIPE14493 C ZPIP11244 1.5 0 1 CIRCULAR 0.121 RCP 2.9 2.9 None 0.08 4.7 4.7 None 7.1 7.1 None 8.0 8.0 None PIPE14548 C ZPIP15363 1.5 0 1 CIRCULAR 0.010 RCP 0.9 0.9 None 0.09 1.4 1.4 None 2.1 2.1 None 2.3 2.3 None PIPE14598 C ZPIP15741 1.5 0 1 CIRCULAR 0.090 RCP 2.2 2.2 None 0.07 4.0 4.0 None 6.1 6.1 None 6.9 6.9 None PIPE14824 C ZPIP11938 1.5 0 1 CIRCULAR 0.173 RCP 0.0 0.0 None 0 0.0 0.5 None 0.0 14.3 Both Upstream and Downstream 0.0 9.5 Both Upstream and Downstream

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 80 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14210 C ZPIP12817 4 0 1 CIRCULAR 0.516 RCP 75.5 76.2 None 0.07 127.0 131.0 None 191.0 192.8 None 217.9 216.3 None PIPE14291 C ZPIP13940 1.5 0 1 CIRCULAR 0.048 PVC 1.9 1.9 None 0.08 3.0 3.0 None 4.3 4.3 None 4.9 4.9 None PIPE14308 C ZPIP13951 2.5 0 1 CIRCULAR 0.176 PVC 14.9 16.3 None 0.09 22.2 24.2 None 30.7 33.4 None 34.3 36.9 None PIPE14573 C ZPIP15468 2 0 1 CIRCULAR 0.034 HDPE 3.0 3.3 None 0.08 4.8 5.2 None 7.1 7.6 None 8.0 8.6 None PIPE14287 C ZPIP13936 1.5 0 1 CIRCULAR 0.036 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 4.0 None 0.0 4.0 None PIPE14309 C ZPIP13952 1.5 0 1 CIRCULAR 0.056 PVC 1.9 1.9 None 0.08 3.0 3.0 None 4.4 4.4 None 4.9 4.9 None PIPE14533 C ZPIP15353 2 0 1 CIRCULAR 0.046 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.1 None 0.0 9.9 None PIPE14560 C ZPIP17439 1.5 0 1 CIRCULAR 0.064 RCP 2.1 2.1 None 0.08 3.3 3.3 None 4.8 4.8 None 5.4 5.4 None PIPE14596 C ZPIP11803 1.5 0 1 CIRCULAR 0.102 RCP 2.2 2.2 None 0.07 3.9 3.9 None 6.0 6.0 None 6.9 6.9 None PIPE14638 C ZPIP15907 1.5 0 1 CIRCULAR 0.166 RCP 3.0 3.0 None 0.07 5.0 5.0 None 7.4 7.4 None 8.4 8.4 None PIPE14719 C ZPIP17233 1.5 0 1 CIRCULAR 0.032 RCP 0.0 0.0 None 0 0.0 1.8 None 0.0 4.1 None 0.0 3.8 Upstream PIPE14742 C PIP20044 3 0 1 CIRCULAR 0.143 RCP 16.3 16.4 None 0.07 29.4 29.6 None 44.8 45.1 None 51.2 51.5 None PIPE14286 C ZPIP13935 1.5 0 1 CIRCULAR 0.079 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 2.3 None 0.0 5.6 None PIPE14326 C ZPIP17064 1.5 0 1 CIRCULAR 0.053 PVC 1.8 1.8 None 0.07 2.8 2.8 None 4.1 4.1 None 4.6 4.6 None PIPE14355 C ZPIP14056 1.5 0 1 CIRCULAR 0.061 RCP 1.8 1.8 None 0.07 2.9 2.9 None 4.2 4.2 None 4.7 4.9 None PIPE14372 C ZPIP14068 1.5 0 1 CIRCULAR 0.047 RCP 1.1 1.1 None 0.05 2.3 2.3 None 3.6 3.6 None 4.1 4.1 None PIPE14425 C ZPIP17091 1.5 0 1 CIRCULAR 0.115 RCP 2.5 2.5 None 0.07 3.9 3.9 None 5.6 5.6 None 6.3 6.3 None PIPE14584 C ZPIP17486 1.5 0 1 CIRCULAR 0.365 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.0 None 0.0 11.3 None PIPE14630 C ZPIP17570 2 0 1 CIRCULAR 0.075 RCP 3.4 3.4 None 0.05 6.3 6.3 None 9.6 9.6 None 11.0 11.0 None PIPE14415 C ZPIP14099 2 0 1 CIRCULAR 0.060 RCP 1.3 1.3 None 0.02 2.1 2.1 None 3.1 3.1 None 3.5 9.6 None PIPE14436 C ZPIP14229 1.5 0 1 CIRCULAR 0.319 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 11.8 None 0.0 10.2 None PIPE14629 C ZPIP17569 2 0 1 CIRCULAR 0.078 RCP 3.3 3.3 None 0.05 6.2 6.3 None 9.5 9.6 None 10.9 11.0 None PIPE14346 C ZPIP13983 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.2 None 0.2 1.6 None 0.2 1.7 None PIPE14351 C ZPIP13988 2.5 0 1 CIRCULAR 0.772 RCP 22.5 22.5 None 0.06 35.6 35.6 None 52.4 52.1 None 59.2 58.8 None PIPE14407 C ZPIP14091 3.5 0 1 CIRCULAR 0.122 RCP 21.6 23.4 None 0.07 33.2 35.5 None 46.7 49.2 None 52.3 54.9 None PIPE14408 C ZPIP14092 3.5 0 1 CIRCULAR 0.097 RCP 20.8 22.4 None 0.07 31.3 33.6 None 43.4 45.9 None 48.4 51.0 None PIPE14414 C ZPIP10942 2 0 1 CIRCULAR 0.596 RCP 12.3 12.7 None 0.07 17.8 18.8 None 24.0 25.0 None 26.6 27.3 None PIPE14458 C ZPIP17157 1.5 0 1 CIRCULAR 0.755 RCP 5.2 5.2 None 0.06 8.8 8.8 None 13.2 13.2 None 15.1 15.1 None PIPE14602 C ZPIP17557 1.5 0 1 CIRCULAR 0.049 RCP 0.0 0.0 None 0 0.0 3.1 None 0.0 3.0 Downstream 0.0 3.7 Both Upstream and Downstream PIPE14745 C ZPIP12773 1.5 0 1 CIRCULAR 0.041 RCP 0.7 0.7 None 0.03 1.2 1.2 None 1.8 1.8 None 2.0 3.3 Downstream PIPE14310 C ZPIP13953 1.5 0 1 CIRCULAR 0.103 PVC 1.9 1.9 None 0.06 3.0 3.0 None 4.4 4.4 None 4.9 4.9 None PIPE14565 C ZPIP15445 1.5 0 1 CIRCULAR 0.167 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 3.7 Downstream 0.0 6.5 Both Upstream and Downstream PIPE14632 C ZPIP11845 1.5 0 1 CIRCULAR 0.021 RCP 0.9 0.9 None 0.06 1.4 1.4 None 2.0 2.1 None 2.3 2.4 None PIPE14668 C PIP19102 1.5 0 1 CIRCULAR 0.181 RCP 1.6 1.6 None 0.04 3.6 3.6 None 5.7 5.7 None 6.6 6.6 None PIPE14800 C ZPIP11842 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.7 None 0.0 2.1 None PIPE14412 C ZPIP10940 1.5 0 1 CIRCULAR 0.172 RCP 2.5 2.5 None 0.06 3.9 3.9 None 5.6 5.6 None 6.3 6.3 None PIPE14248 C ZPIP13138 2 0 1 CIRCULAR 0.083 RCP 3.4 3.4 None 0.05 5.3 5.3 None 7.7 7.7 None 8.7 8.7 None PIPE14366 C ZPIP14065 2 0 1 CIRCULAR 0.014 RCP 1.3 1.3 None 0.05 2.1 2.1 None 3.1 3.1 None 3.5 3.5 None PIPE14644 C ZPIP15990 3 0 1 CIRCULAR 0.286 RCP 16.9 18.9 None 0.05 25.6 28.3 None 36.0 40.3 Downstream 40.5 45.9 Downstream PIPE14748 C ZPIP17126 1.5 0 1 CIRCULAR 0.048 HDPE 0.0 2.4 None 0.1 7.7 3.7 None 18.7 2.9 None 14.0 3.0 Downstream PIPE14205 C ZPIP10258 2 0 1 CIRCULAR 0.041 RCP 2.2 2.2 None 0.05 3.4 3.4 None 5.0 5.0 None 5.6 5.6 None PIPE14384 C ZPIP14077 2.5 0 1 CIRCULAR 0.011 RCP 1.1 1.1 None 0.03 2.2 2.2 None 3.5 4.1 None 4.0 5.2 None PIPE14442 C ZPIP11072 4.5 0 1 CIRCULAR 0.457 RCP 68.2 69.5 None 0.05 130.0 105.3 None 201.1 143.0 None 232.6 160.4 None PIPE14723 C ZPIP14726 3 0 1 CIRCULAR 0.069 RCP 7.7 7.7 None 0.04 12.3 12.3 None 18.1 18.2 None 20.4 20.5 None PIPE14496 C ZPIP11247 2 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.2 None 0.0 2.1 None 0.0 3.1 None PIPE14795 C ZPIP11254 2 0 1 CIRCULAR 0.047 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 5.6 None PIPE14187 C ZPIP10098 2 0 1 CIRCULAR 0.059 RCP 2.3 2.3 None 0.04 3.5 3.5 None 5.1 5.1 None 5.7 5.7 None PIPE14273 C ZPIP13857 1.5 0 1 CIRCULAR 0.126 RCP 0.1 0.0 None 0 0.1 0.0 None 0.1 3.8 None 0.1 3.7 None PIPE14341 C ZPIP13981 3 0 1 CIRCULAR 0.900 RCP 25.8 25.9 None 0.04 42.6 42.9 None 63.2 60.8 None 71.8 64.5 None PIPE14563 C ZPIP11616 1.5 0 1 CIRCULAR 0.694 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 8.4 None PIPE14694 C ZPIP16923 1.5 0 1 CIRCULAR 0.102 RCP 1.2 1.2 None 0.04 2.0 2.0 None 3.0 3.0 None 3.4 3.4 None PIPE14406 C ZPIP10939 3.5 0 1 CIRCULAR 0.505 RCP 23.5 25.1 None 0.04 36.7 38.8 None 52.0 54.5 None 58.3 61.0 None PIPE14708 C ZPIP14244 3 0 1 CIRCULAR 0.091 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 15.6 None 0.0 18.6 Downstream FLOW10083 C 4 10 1 TRAPEZOIDAL 0.025 EARTHEN 18.2 18.3 None 0 30.6 31.0 None 45.7 42.7 Downstream 52.0 43.5 Both Upstream and Downstream PIPE14834 C ZPIP17622 2 0 1 CIRCULAR 0.880 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 13.0 None 19.2 19.2 Downstream PIPE14311 C ZPIP13954 2 0 1 CIRCULAR 0.044 RCP 1.4 1.4 None 0.03 2.2 2.2 None 3.3 3.3 None 3.7 3.7 None PIPE14377 C ZPIP10928 3.5 0 1 CIRCULAR 0.360 RCP 20.8 22.4 None 0.04 31.3 33.6 None 43.4 45.9 None 48.4 51.0 None PIPE14484 C ZPIP14677 2.5 0 1 CIRCULAR 0.039 RCP 2.1 2.1 None 0.03 3.4 3.4 None 5.0 5.0 None 5.7 5.7 None PIPE14494 C ZPIP14686 1.5 0 1 CIRCULAR 0.092 RCP 0.8 0.8 None 0.02 1.3 1.3 None 2.0 2.0 None 2.2 2.2 None PIPE14618 C ZPIP11839 1.5 0 1 CIRCULAR 0.095 RCP 0.9 0.9 None 0.03 1.5 1.5 None 2.1 2.1 None 2.4 2.4 None PIPE14743 C ZPIP10243 2 0 1 CIRCULAR 0.124 RCP 2.0 2.0 None 0.02 3.2 3.2 None 4.7 4.7 None 5.4 5.4 None PIPE14190 C ZPIP12476 2.5 0 1 CIRCULAR 0.062 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 4.3 None 0.0 6.5 None CULV10250 C CUL068 20.333 35.833 1 ARCH 0.005 RCP 262.4 266.0 None 0.02 455.9 458.7 None 686.8 690.9 None 786.6 832.1 None PIPE14391 C ZPIP14081 1.5 0 1 CIRCULAR 0.016 RCP 0.1 0.1 None 0 0.1 0.1 None 0.1 0.7 None 0.1 0.8 None FLOW10066 C 4 10 1 TRAPEZOIDAL 0.036 RCP 75.5 76.2 None 0.02 127.0 130.8 None 245.7 192.4 None 328.3 215.6 None DTCH10456 C ZCH10030B 0 0 1 IRREGULAR 0.014 Concrete 240.1 260.5 None 0.02 461.5 464.3 None 718.2 631.7 None 809.3 682.1 None DTCH10478 C ZCH10030B 0 0 1 IRREGULAR 0.018 Concrete 253.9 276.0 None 0.02 487.7 493.6 None 755.2 674.1 None 858.9 742.2 None PIPE14569 C ZPIP11665 1.5 0 1 CIRCULAR 0.431 RCP 1.3 1.3 None 0.02 2.1 2.1 None 3.1 3.1 None 3.5 3.5 None PIPE14756 C ZPIP14391 2.5 0 1 CIRCULAR 0.134 RCP 2.1 2.1 None 0.01 4.4 4.4 None 6.8 6.9 None 7.9 7.9 None DTCH10482 C ZCH10030B 0 0 1 IRREGULAR 0.018 Concrete 251.7 274.5 None 0.02 486.6 492.8 None 753.4 651.0 None 857.3 726.6 None PIPE14485 C ZPIP14678 2.5 0 1 CIRCULAR 0.109 RCP 2.1 2.1 None 0.02 3.4 3.4 None 5.0 5.0 None 5.7 5.7 None PIPE14592 C ZPIP17540 1.5 0 1 CIRCULAR 0.192 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 1.8 None DTCH10453 C ZCH10030B 0 0 1 IRREGULAR 0.015 Concrete 240.3 261.8 None 0.01 463.1 465.4 None 720.2 633.0 None 811.4 683.1 None DTCH10454 C ZCH10030B 0 0 1 IRREGULAR 0.015 Concrete 240.1 260.8 None 0.02 461.9 464.5 None 718.5 631.9 None 809.7 682.3 None DTCH10455 C ZCH10030B 0 0 1 IRREGULAR 0.015 Concrete 240.1 260.6 None 0.01 461.6 464.3 None 718.1 631.7 None 809.3 682.1 None DTCH10457 C ZCH10030B 0 0 1 IRREGULAR 0.015 Concrete 240.2 260.5 None 0.02 461.4 464.2 None 717.2 631.3 None 808.8 682.6 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 81 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
DTCH10477 C ZCH10030B 0 0 1 IRREGULAR 0.034 Concrete 254.7 276.6 None 0.02 487.9 493.7 Upstream 756.0 675.5 Upstream 859.2 741.2 Upstream DTCH10479 C ZCH10030B 0 0 1 IRREGULAR 0.018 Concrete 252.3 274.9 None 0.02 487.1 493.1 None 754.2 670.6 None 858.1 744.7 None DTCH10480 C ZCH10030B 0 0 1 IRREGULAR 0.018 Concrete 251.8 274.6 None 0.02 486.8 492.9 None 753.7 667.1 None 857.8 747.5 None DTCH10483 C ZCH10030B 0 0 1 IRREGULAR 0.017 Concrete 251.6 274.4 None 0.01 486.5 491.0 None 753.3 630.9 None 857.2 712.2 None PIPE14825 C ZPIP17622 1.5 0 1 CIRCULAR 1.147 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 1.6 None 0.0 4.9 Downstream PIPE14390 C ZPIP14080 1.5 0 1 CIRCULAR 0.053 RCP 0.0 0.0 None 0 0.1 0.0 None 0.1 0.6 None 0.1 0.6 None FLOW10059 C 4 10 1 TRAPEZOIDAL 0.006 RCP 12.2 12.3 None 0.01 22.2 22.1 None 35.1 32.5 None 40.3 36.8 None FLOW10067 C 4 10 1 TRAPEZOIDAL 0.022 RCP 5.8 10.1 None 0 44.7 70.2 None 252.2 116.8 None 308.3 79.5 None FLOW10075 C 4 10 1 TRAPEZOIDAL 0.011 RCP 15.8 15.9 None 0.01 28.7 28.9 None 43.7 44.2 None 50.1 50.6 None DTCH10481 C ZCH10030B 0 0 1 IRREGULAR 0.017 Concrete 251.8 274.5 None 0.01 486.7 492.8 None 753.5 661.5 None 857.5 738.9 None DTCH10484 C ZCH10030B 0 0 1 IRREGULAR 0.017 Concrete 251.4 274.0 None 0.01 486.3 481.9 None 753.1 602.1 None 857.1 697.0 None DTCH10485 C ZCH10030B 0 0 1 IRREGULAR 0.036 Concrete 251.3 273.4 Downstream 0.01 486.3 468.0 Downstream 753.0 579.4 Downstream 857.0 685.6 Downstream CHAN10768 C 0 0 1 IRREGULAR 0.017 EARTHEN 316.0 336.7 None 0.01 554.4 564.3 Downstream 857.0 870.4 Downstream 981.0 993.8 Downstream PIPE14402 C ZPIP14089 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.2 None 0.0 0.2 None PIPE14418 C ZPIP10943 1.5 0 1 CIRCULAR 0.015 RCP 0.0 0.0 None 0 0.0 0.1 None 0.0 0.2 None 0.0 0.2 None PIPE14508 C ZPIP17237 2.5 0 1 CIRCULAR 0.023 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.6 None 0.0 1.4 None FLOW10081 C 4 10 1 TRAPEZOIDAL 0.120 RCP 45.0 45.0 None 0.01 75.4 75.4 None 114.4 108.5 None 130.6 118.9 None CHAN10665 C ZCH10103B 0 0 1 IRREGULAR 0.002 Concrete 97.8 109.5 None 0.01 190.2 173.4 None 300.0 248.3 None 353.9 255.7 None DTCH10452 C ZCH10030B 0 0 1 IRREGULAR 0.059 Concrete 240.6 262.8 None 0.01 464.2 466.2 None 721.8 634.2 None 813.1 684.0 Upstream DTCH10458 C ZCH10030B 0 0 1 IRREGULAR 0.061 Concrete 239.6 260.0 None 0.01 461.0 464.0 Downstream 715.9 630.6 Downstream 808.5 683.9 Downstream CHAN10762 C 0 0 1 IRREGULAR 0.021 RCP 328.3 349.8 None 0.01 575.4 587.8 None 884.6 899.7 None 1013.5 1029.7 None CHAN10766 C 0 0 1 IRREGULAR 0.030 EARTHEN 316.1 337.2 None 0.01 555.2 565.3 None 859.6 873.4 None 982.2 995.3 None CHAN10767 C 0 0 1 IRREGULAR 0.021 EARTHEN 316.1 337.1 None 0.01 554.6 564.6 None 857.8 871.3 None 981.5 994.5 None FLOW10084 C 4 10 1 TRAPEZOIDAL 0.034 EARTHEN 0.0 0.0 None 0 0.0 6.6 None 0.0 10.8 Downstream 0.0 10.5 Downstream PIPE14259 C ZPIP16894 1.5 0 1 CIRCULAR 0.207 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.3 None 0.0 0.7 None PIPE14360 C ZPIP10922 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.1 None 0.0 0.2 None 0.1 0.2 None PIPE14403 C ZPIP14090 1.5 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None PIPE14419 C ZPIP10944 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.1 None PIPE14589 C ZPIP17508 2 0 1 CIRCULAR 0.012 RCP 0.1 0.1 None 0 0.1 0.3 None 0.2 6.8 Downstream 0.3 0.3 None PIPE14621 C ZPIP17565 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.1 None FLOW10056 C 4 10 1 TRAPEZOIDAL 0.270 RCP 20.1 20.1 None 0 32.4 32.2 None 47.9 46.3 None 54.1 53.8 None FLOW10057 C 4 10 1 TRAPEZOIDAL 0.065 RCP 29.7 29.8 None 0.01 48.5 48.6 None 72.9 66.3 None 82.9 69.3 None FLOW10064 C 4 10 1 TRAPEZOIDAL 0.071 RCP 12.7 12.8 None 0 20.6 19.5 None 28.6 27.9 None 31.4 28.4 None FLOW10074 C 4 10 1 TRAPEZOIDAL 0.067 RCP 114.2 39.3 None 0.01 202.0 51.0 None 308.6 63.3 None 352.0 68.4 None PIPE14707 C ZPIP16921 1.5 0 1 CIRCULAR 0.016 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None FLOW10077 C 4 10 1 TRAPEZOIDAL 0.050 RCP 13.2 13.4 None 0 25.9 26.0 None 40.0 39.7 None 45.9 44.7 None CHAN10656 C ZCH10082 0 0 1 IRREGULAR 0.002 Concrete 205.9 226.6 Upstream 0 398.2 391.5 Upstream 613.8 508.2 Upstream 678.6 541.8 Upstream CHAN10660 C ZCH10086 0 0 1 IRREGULAR 0.004 Concrete 52.2 52.1 None 0 92.3 91.7 None 138.9 131.4 None 159.2 144.5 None CHAN10662 C ZCH10103A 0 0 1 IRREGULAR 0.008 Concrete 95.4 105.6 None 0 184.4 163.8 None 288.9 232.9 Upstream 337.3 253.3 Upstream CHAN10664 C ZCH10103B 0 0 1 IRREGULAR 0.020 Concrete 98.2 110.3 Upstream 0 190.8 174.3 Upstream 300.3 251.4 Upstream 352.7 270.2 Upstream CHAN10669 C ZCH10103D 0 0 1 IRREGULAR 0.010 Concrete 96.8 102.8 None 0 186.0 157.0 None 290.0 220.6 None 334.6 247.6 None DTCH10450 C CH999 0 0 1 IRREGULAR 0.026 Concrete 36.0 36.2 None 0 66.5 65.5 None 103.6 95.0 None 120.1 106.3 None CHAN10694 C ZCH10033B 0 0 1 IRREGULAR 0.010 Concrete 191.3 198.3 None 0 380.8 395.8 None 579.8 569.7 None 670.8 609.3 None CHAN10729 C 0 0 1 IRREGULAR 0.010 RCP 328.2 349.4 None 0 575.1 587.5 None 883.7 898.6 None 1012.7 1028.4 None CHAN10730 C 0 0 1 IRREGULAR 0.022 RCP 405.7 403.3 None 0 574.7 587.0 None 882.3 896.9 None 1012.0 1027.2 None CHAN10737 C 0 0 1 IRREGULAR 0.013 RCP 292.2 318.8 None 0 514.3 508.2 None 849.2 818.4 None 991.4 893.3 None CHAN10738 C 0 0 1 IRREGULAR 0.014 RCP 284.2 292.7 None 0 499.0 484.0 None 815.5 773.1 None 977.5 869.2 None CHAN10739 C 0 0 1 IRREGULAR 0.014 RCP 278.5 290.5 None 0 487.6 480.8 None 785.0 756.9 None 916.6 859.9 None CHAN10742 C ZCH10137 0 0 1 IRREGULAR 0.008 Concrete 281.9 312.8 None 0 549.4 408.4 None 882.3 505.8 None 1002.2 633.1 None CHAN10753 C ZCH10048 0 0 1 IRREGULAR 0.001 Concrete 63.8 76.8 None 0 120.9 124.7 None 193.1 186.1 None 226.7 207.8 None CHAN10760 C 0 0 1 IRREGULAR 0.017 RCP 328.7 350.4 None 0 576.3 588.8 Upstream 887.1 903.4 Upstream 1015.0 1031.7 Upstream CHAN10761 C 0 0 1 IRREGULAR 0.012 RCP 328.6 350.0 None 0 575.8 588.2 None 885.5 901.5 None 1014.1 1030.3 None CHAN10763 C 0 0 1 IRREGULAR 0.061 RCP 328.2 349.6 None 0 575.3 587.7 None 884.1 899.1 None 1013.0 1028.9 None CHAN10764 C 0 0 1 IRREGULAR 0.004 EARTHEN 316.4 337.6 Upstream 0 555.7 565.9 Upstream 861.1 876.2 Upstream 983.3 996.8 Upstream CHAN10765 C 0 0 1 IRREGULAR 0.115 EARTHEN 316.3 337.4 None 0 555.4 565.7 None 860.6 875.1 None 983.0 996.1 None CHAN10769 C ZCH10084 0 0 1 IRREGULAR 0.021 Concrete 287.8 1547.3 Upstream 0.01 559.4 1912.2 Upstream 841.5 1931.8 Upstream 922.2 2177.3 Upstream CHAN10781 C 0 0 1 IRREGULAR 0.064 Concrete 189.3 125.8 None 0 337.0 206.3 None 510.7 294.6 None 582.5 332.9 None CHAN10782 C 0 0 1 IRREGULAR 0.027 Concrete 189.2 125.9 None 0 337.1 206.6 None 509.6 295.3 None 582.4 333.4 None DTCH10439 C 1.5 4 1 PARABOLIC 0.146 Concrete 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None DTCH10440 C CH999 0 0 1 IRREGULAR 0.041 Concrete 29.4 29.6 None 0 54.2 53.4 None 84.5 77.4 None 98.0 86.6 None PIPE14193 C ZPIP10226 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14196 C ZPIP16741 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14199 C ZPIP16750 1.5 0 1 CIRCULAR 0.504 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14200 C ZPIP10242 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14201 C ZPIP12792 1.5 0 1 CIRCULAR 0.026 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14212 C ZPIP16765 2 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14215 C ZPIP10273 1.5 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14218 C ZPIP16771 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14224 C ZPIP10399 1.5 0 1 CIRCULAR 0.173 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14227 C ZPIP13070 2 0 1 CIRCULAR 0.012 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14229 C ZPIP16858 1.5 0 1 CIRCULAR 0.041 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14246 C ZPIP10441 2 0 1 CIRCULAR 0.040 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14247 C ZPIP10442 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14250 C ZPIP13140 2 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14253 C ZPIP10463 1.5 0 1 CIRCULAR 0.048 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14257 C ZPIP13207 1.5 0 1 CIRCULAR 0.057 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 82 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14260 C ZPIP13439 2.5 0 1 CIRCULAR 0.173 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14270 C ZPIP13769 2 0 1 CIRCULAR 0.074 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14288 C ZPIP13937 1.5 0 1 CIRCULAR 0.180 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14292 C ZPIP10860 1.5 0 1 CIRCULAR 0.309 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14293 C ZPIP10861 1.5 0 1 CIRCULAR 0.036 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14294 C ZPIP10862 1.5 0 1 CIRCULAR 0.315 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14296 C ZPIP13942 1.5 0 1 CIRCULAR 0.032 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14297 C ZPIP13943 1.5 0 1 CIRCULAR 0.065 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14300 C ZPIP13946 1.5 0 1 CIRCULAR 0.136 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14302 C ZPIP10863 1.5 0 1 CIRCULAR 0.171 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14305 C ZPIP13948 1.5 0 1 CIRCULAR 0.204 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14306 C ZPIP13949 1.5 0 1 CIRCULAR 0.316 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14318 C ZPIP13958 1.5 0 1 CIRCULAR 0.050 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14324 C ZPIP10872 1.5 0 1 CIRCULAR 0.021 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14325 C ZPIP13963 1.5 0 1 CIRCULAR 0.049 PVC 0.0 0.0 None 0 0.1 0.0 None 0.1 0.0 None 0.1 0.0 None PIPE14327 C ZPIP17065 1.5 0 1 CIRCULAR 0.118 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14329 C ZPIP10873 1.5 0 1 CIRCULAR 0.032 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14330 C ZPIP10874 1.5 0 1 CIRCULAR 0.109 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14334 C ZPIP10879 1.5 0 1 CIRCULAR 0.033 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14336 C ZPIP13976 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14352 C ZPIP10883 1.5 0 1 CIRCULAR 0.718 PVC 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14362 C ZPIP10924 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14363 C ZPIP14062 1.5 0 1 CIRCULAR 0.018 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14365 C ZPIP14064 1.5 0 1 CIRCULAR 0.051 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.3 None 0.0 0.0 None PIPE14370 C ZPIP10927 1.5 0 1 CIRCULAR 0.048 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14376 C ZPIP14072 1.5 0 1 CIRCULAR 0.052 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14381 C ZPIP14074 1.5 0 1 CIRCULAR 0.277 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14382 C ZPIP14075 2 0 1 CIRCULAR 0.037 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14383 C ZPIP14076 1.5 0 1 CIRCULAR 0.235 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14387 C ZPIP10932 1.5 0 1 CIRCULAR 0.270 RCP 0.0 0.0 None 0 0.0 0.1 None 0.1 0.2 None 0.1 0.2 None PIPE14389 C ZPIP14079 1.5 0 1 CIRCULAR 0.013 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14401 C ZPIP14088 1.5 0 1 CIRCULAR 0.066 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14409 C ZPIP14093 1.5 0 1 CIRCULAR 0.254 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14413 C ZPIP10941 1.5 0 1 CIRCULAR 0.020 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14416 C ZPIP17087 1.5 0 1 CIRCULAR 0.628 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14423 C ZPIP17089 2 0 1 CIRCULAR 0.267 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14424 C ZPIP17090 1.5 0 1 CIRCULAR 0.104 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14427 C ZPIP14187 1.5 0 1 CIRCULAR 0.770 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14428 C ZPIP14197 1.5 0 1 CIRCULAR 0.004 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14430 C ZPIP14207 1.5 0 1 CIRCULAR 0.044 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14432 C ZPIP14209 1.5 0 1 CIRCULAR 0.126 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14433 C ZPIP10996 1.5 0 1 CIRCULAR 0.176 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14434 C ZPIP10997 1.5 0 1 CIRCULAR 0.406 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14441 C ZPIP14250 1.5 0 1 CIRCULAR 0.008 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14444 C ZPIP14360 1.5 0 1 CIRCULAR 0.522 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14445 C ZPIP14361 1.5 0 1 CIRCULAR 0.224 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14451 C ZPIP11078 2.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14452 C ZPIP14372 2.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14457 C ZPIP11081 1.5 0 1 CIRCULAR 0.096 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14460 C ZPIP17159 1.5 0 1 CIRCULAR 0.032 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14461 C ZPIP17160 1.5 0 1 CIRCULAR 0.077 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14465 C ZPIP14386 1.5 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14466 C ZPIP14387 2 0 1 CIRCULAR 0.006 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14467 C ZPIP14388 2 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14475 C ZPIP11092 1.5 0 1 CIRCULAR 0.091 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14477 C ZPIP11094 1.5 0 1 CIRCULAR 0.058 ACP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14480 C ZPIP14407 1.5 0 1 CIRCULAR 0.059 ACP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14481 C ZPIP17168 1.5 0 1 CIRCULAR 0.014 ACP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14482 C ZPIP14675 1.5 0 1 CIRCULAR 0.069 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14495 C ZPIP14687 1.5 0 1 CIRCULAR 0.703 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14499 C ZPIP14693 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14505 C ZPIP14700 2 0 1 CIRCULAR 0.033 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14506 C ZPIP17235 2 0 1 CIRCULAR 0.294 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14509 C ZPIP14714 1.5 0 1 CIRCULAR 0.110 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14510 C ZPIP14715 1.5 0 1 CIRCULAR 0.001 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14511 C ZPIP11263 1.5 0 1 CIRCULAR 0.242 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None PIPE14515 C ZPIP14720 2 0 1 CIRCULAR 0.148 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14516 C ZPIP14721 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14517 C ZPIP14847 2 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.1 None 0.1 0.1 None 0.1 0.1 None PIPE14522 C ZPIP14915 1.5 0 1 CIRCULAR 0.287 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14532 C ZPIP15352 1.5 0 1 CIRCULAR 0.229 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14537 C ZPIP15356 1.5 0 1 CIRCULAR 0.014 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.1 None PIPE14544 C ZPIP11609 1.5 0 1 CIRCULAR 0.350 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14551 C ZPIP17437 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14552 C ZPIP17438 1.5 0 1 CIRCULAR 0.005 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14553 C ZPIP11612 1.5 0 1 CIRCULAR 0.064 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 83 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14554 C ZPIP11613 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14555 C ZPIP11614 1.5 0 1 CIRCULAR 0.024 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14556 C ZPIP11615 1.5 0 1 CIRCULAR 0.055 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14557 C ZPIP15368 1.5 0 1 CIRCULAR 0.108 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14561 C ZPIP17440 1.5 0 1 CIRCULAR 0.256 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14562 C ZPIP17441 1.5 0 1 CIRCULAR 0.145 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14571 C ZPIP15466 1.5 0 1 CIRCULAR 0.010 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14572 C ZPIP15467 1.5 0 1 CIRCULAR 0.048 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14574 C ZPIP15469 1.5 0 1 CIRCULAR 0.040 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14577 C ZPIP15472 2 0 1 CIRCULAR 0.009 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14579 C ZPIP11668 0 0 1 DUMMY 0.042 CMP 3.2 3.3 None 0 5.1 5.2 None 7.5 7.6 None 8.4 8.6 None PIPE14580 C ZPIP11691 1.5 0 1 CIRCULAR 0.323 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14581 C ZPIP15512 1.5 0 1 CIRCULAR 0.061 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14582 C ZPIP15513 1.5 0 1 CIRCULAR 0.284 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.2 None PIPE14593 C ZPIP17541 1.5 0 1 CIRCULAR 0.075 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14594 C ZPIP11801 1.5 0 1 CIRCULAR 0.073 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14595 C ZPIP11802 1.5 0 1 CIRCULAR 0.021 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14597 C ZPIP11804 1.5 0 1 CIRCULAR 0.040 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14610 C ZPIP15801 1.5 0 1 CIRCULAR 0.042 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14612 C ZPIP17561 1.5 0 1 CIRCULAR 0.050 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14615 C ZPIP11836 1.5 0 1 CIRCULAR 0.325 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14616 C ZPIP11837 1.5 0 1 CIRCULAR 0.046 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14617 C ZPIP11838 1.5 0 1 CIRCULAR 0.034 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14619 C ZPIP15806 1.5 0 1 CIRCULAR 0.090 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14620 C ZPIP15807 1.5 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14622 C ZPIP17566 1.5 0 1 CIRCULAR 0.078 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14627 C ZPIP15814 2 0 1 CIRCULAR 0.009 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.1 None 0.0 0.1 None PIPE14628 C ZPIP17568 2 0 1 CIRCULAR 0.007 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14634 C ZPIP15818 1.5 0 1 CIRCULAR 0.033 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14635 C ZPIP15819 1.5 0 1 CIRCULAR 0.010 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14636 C ZPIP15905 1.5 0 1 CIRCULAR 0.011 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14637 C ZPIP15906 1.5 0 1 CIRCULAR 0.293 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14639 C ZPIP17605 1.5 0 1 CIRCULAR 0.060 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14640 C ZPIP17606 1.5 0 1 CIRCULAR 0.178 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14648 C ZPIP12193 0 0 1 DUMMY 0.068 RCP 21.5 21.7 None 0 37.6 37.9 None 55.8 55.8 None 63.9 62.7 None PIPE14649 C ZPIP12194 0 0 1 DUMMY 0.200 RCP 10.8 10.9 None 0 19.3 19.2 None 29.4 29.8 None 33.7 32.5 None PIPE14650 C ZPIP12230 1.5 0 1 CIRCULAR 0.019 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14654 C ZPIP16599 0 0 1 DUMMY 0.000 RCP 39.5 39.3 None 0 62.4 63.1 None 88.0 66.1 None 99.4 71.0 None PIPE14658 C ZPIP16602 0 0 1 DUMMY 0.027 PVC 13.4 13.8 None 0 19.8 20.8 None 27.0 28.1 None 30.0 30.9 None PIPE14659 C ZPIP16603 0 0 1 DUMMY 0.029 RCP 15.1 15.1 None 0 23.3 33.6 None 34.4 42.6 None 39.0 42.5 None PIPE14660 C ZPIP17875 0 0 1 DUMMY 0.009 RCP 38.7 41.5 None 0 64.9 69.4 None 97.4 104.0 None 110.8 113.0 None PIPE14661 C PIP16853 1.5 0 1 CIRCULAR 0.010 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14662 C PIP19095 1.5 0 1 CIRCULAR 0.064 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10051 C PIP19112 4 10 1 TRAPEZOIDAL 0.014 RCP 1.6 1.6 None 0 3.2 3.6 None 5.0 5.7 None 5.8 6.6 None PIPE14677 C PIP19114 1.5 0 1 CIRCULAR 0.008 HDPE 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10052 C 0 0 1 DUMMY 0.027 RCP 5.9 5.9 None 0 11.2 11.2 None 17.2 17.2 None 19.7 18.1 None PIPE14680 C 1.5 0 1 CIRCULAR 0.093 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10053 C 0 0 1 DUMMY 0.097 RCP 14.3 15.1 None 0 28.7 26.2 None 44.3 37.4 None 51.0 42.1 None FLOW10054 C 0 0 1 DUMMY 0.100 RCP 5.5 5.8 None 0 11.4 11.5 None 18.0 18.1 None 20.8 24.6 None FLOW10055 C 4 10 1 TRAPEZOIDAL 0.134 RCP 9.8 9.8 None 0 16.7 16.6 None 25.2 25.1 None 28.7 28.6 None FLOW10058 C 0 0 1 DUMMY 0.006 RCP 13.3 14.4 None 0 24.2 25.6 None 38.1 37.1 None 44.0 41.8 None FLOW10060 C 4 10 1 TRAPEZOIDAL 0.207 RCP 11.0 11.0 None 0 20.0 21.1 None 30.3 28.0 None 34.7 31.4 None FLOW10061 C 0 0 1 DUMMY 0.095 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10062 C 0 0 1 DUMMY 0.021 RCP 18.7 19.4 None 0 35.3 36.2 None 54.6 55.7 None 62.8 62.9 None FLOW10063 C 0 0 1 DUMMY 0.036 RCP 346.6 368.9 None 0 605.9 620.7 None 927.3 923.7 None 1062.0 1024.0 None FLOW10070 C 0 0 1 DUMMY 0.051 RCP 11.1 12.4 None 0 17.8 19.5 None 26.2 28.4 None 29.7 32.0 None FLOW10071 C 0 0 1 DUMMY 0.204 RCP 6.4 10.0 None 0 14.0 17.9 None 22.3 27.0 None 25.9 30.9 None FLOW10072 C 0 0 1 DUMMY 0.119 RCP 8.7 9.0 None 0 13.9 16.1 None 20.5 20.7 None 23.2 21.2 None PIPE14689 C ZPIP14692 1.5 0 1 CIRCULAR 0.052 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10073 C PIP19113 0 0 1 DUMMY 0.021 RCP 14.3 14.8 None 0 28.7 29.2 Downstream 44.4 44.9 Downstream 51.1 50.8 Downstream PIPE14693 C ZPIP16922 1.5 0 1 CIRCULAR 0.081 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14695 C ZPIP10558 1.5 0 1 CIRCULAR 0.066 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14703 C ZPIP10244 3 0 1 CIRCULAR 0.147 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14720 C ZPIP11261 1.5 0 1 CIRCULAR 0.216 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14724 C ZPIP14913 1.5 0 1 CIRCULAR 0.075 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14727 C ZPIP16469 0 0 1 DUMMY 0.246 RCP 1.9 2.0 None 0 3.0 3.2 None 4.5 4.7 None 5.2 5.4 None PIPE14728 C ZPIP16471 0 0 1 DUMMY 0.000 RCP 253.8 195.5 Downstream 0 299.7 269.3 Downstream 457.5 322.6 Downstream 495.6 334.5 Downstream PIPE14729 C ZPIP16472 0 0 1 DUMMY 0.185 RCP 11.6 11.7 None 0 21.0 21.1 None 32.2 32.3 None 37.2 37.3 None PIPE14730 C ZPIP16474 0 0 1 DUMMY 0.047 RCP 8.0 8.3 Downstream 0 13.2 13.7 Downstream 19.7 20.4 Downstream 22.5 23.2 Downstream PIPE14731 C ZPIP12195 0 0 1 DUMMY 0.050 RCP 7.0 7.3 Downstream 0 11.2 11.6 Downstream 16.6 17.1 Downstream 18.9 19.4 Downstream PIPE14732 C ZPIP17835 0 0 1 DUMMY 0.289 RCP 4.7 4.8 None 0 7.5 7.6 None 11.0 11.2 Downstream 12.4 12.6 Downstream PIPE14733 C ZPIP17836 0 0 1 DUMMY 0.208 ACP 10.0 10.1 Downstream 0 16.8 16.9 Downstream 25.1 25.3 Downstream 28.5 28.7 Downstream PIPE14734 C ZPIP12208 0 0 1 DUMMY 0.159 ACP 12.8 13.0 None 0 20.6 20.7 None 30.4 30.5 Downstream 34.4 34.3 Downstream PIPE14735 C ZPIP12209 0 0 1 DUMMY 0.456 RCP 2.8 2.8 None 0 4.4 4.5 None 6.4 6.5 None 7.3 7.4 Downstream PIPE14736 C ZPIP12210 0 0 1 DUMMY 0.103 RCP 9.9 9.9 None 0 16.8 16.9 None 23.3 25.3 None 26.8 28.7 None PIPE14737 C ZPIP12211 0 0 1 DUMMY 0.099 RCP 13.0 14.2 None 0 25.6 27.1 None 39.9 41.9 None 45.9 48.0 None

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 84 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
PIPE14744 C ZPIP12772 1.5 0 1 CIRCULAR 0.118 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 Downstream PIPE14767 C ZPIP14716 1.5 0 1 CIRCULAR 0.094 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14775 C ZPIP16470 0 0 1 DUMMY 0.169 RCP 0.9 0.0 None 0 1.4 0.0 None 1.8 0.0 None 2.0 0.0 None PIPE14779 C ZPIP16631 0 0 1 DUMMY 0.352 RCP 105.9 118.9 None 0 177.6 206.3 None 264.8 291.2 None 303.9 308.1 None PIPE14783 C ZPIP14061 1.5 0 1 CIRCULAR 0.017 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None FLOW10076 C 0 0 1 DUMMY 0.011 RCP 28.0 30.8 Downstream 0 52.0 56.2 Downstream 80.1 85.9 Downstream 92.1 98.3 Downstream FLOW10078 C 0 0 1 DUMMY 0.320 RCP 25.2 25.5 None 0 40.8 41.0 Downstream 60.0 58.9 Downstream 67.9 66.1 Downstream PIPE14792 C 0 0 1 DUMMY -0.025 RCP 317.8 337.7 Downstream 0 556.4 566.0 Downstream 861.7 876.3 Downstream 983.7 996.8 Downstream PIPE14793 C 0 0 1 DUMMY 0.021 RCP 315.2 425.2 None 0 543.3 662.5 None 984.9 1206.0 None 1126.7 1350.3 None FLOW10080 C 0 0 1 DUMMY 0.010 RCP 12.7 13.8 None 0 24.1 25.5 None 37.2 39.1 None 42.7 44.8 None CHAN10628 C ZCH10083 0 0 1 IRREGULAR 0.918 Concrete 32.6 34.4 None 0 66.7 66.9 Upstream 96.6 201.4 Upstream 103.6 126.5 Upstream CHAN10629 C ZCH10083 0 0 1 IRREGULAR 0.017 Concrete 32.2 34.3 None 0 66.6 66.8 None 96.5 214.9 None 103.5 72.6 None CHAN10630 C ZCH10083 0 0 1 IRREGULAR 0.047 Concrete 32.0 34.2 Downstream 0 66.2 65.9 Downstream 96.4 205.7 Downstream 103.4 83.6 Downstream CHAN10631 C ZCH10139 0 0 1 IRREGULAR 0.032 Concrete 34.5 35.2 None 0 63.3 65.7 None 112.3 114.3 None 136.8 129.0 None CHAN10632 C ZCH10139 0 0 1 IRREGULAR 0.209 Concrete 31.8 33.1 None 0 63.2 65.5 Downstream 94.3 191.7 Downstream 99.5 109.8 Downstream CHAN10633 C ZCH10118 0 0 1 IRREGULAR 0.596 Concrete 18.2 19.3 None 0 32.3 33.3 None 49.4 50.9 None 56.6 56.6 None CHAN10634 C ZCH10118 0 0 1 IRREGULAR 0.118 Concrete 18.1 19.2 None 0 32.1 33.0 None 48.9 49.7 None 56.0 55.7 None CHAN10635 C ZCH10118 0 0 1 IRREGULAR 0.125 Concrete 17.4 18.3 None 0 30.9 31.6 None 46.7 47.0 None 53.5 52.9 None CHAN10636 C ZCH10118 0 0 1 IRREGULAR 0.120 Concrete 17.3 18.1 None 0 30.8 31.4 None 46.6 46.8 None 53.3 52.7 None CHAN10637 C ZCH10118 0 0 1 IRREGULAR 0.216 Concrete 17.0 17.6 None 0 30.1 30.7 None 45.9 46.0 None 52.7 52.1 None CHAN10638 C ZCH10118 0 0 1 IRREGULAR 0.125 Concrete 16.6 17.2 None 0 29.1 29.7 None 44.4 44.4 None 51.1 50.6 Downstream CHAN10639 C ZCH10031 0 0 1 IRREGULAR 0.306 Concrete 5.8 5.9 None 0 9.9 9.9 None 15.1 14.9 None 17.2 17.0 None CHAN10640 C ZCH10031 0 0 1 IRREGULAR 0.344 Concrete 5.8 5.8 None 0 9.9 9.9 None 15.0 14.7 None 17.1 16.8 None CHAN10641 C ZCH10140A 0 0 1 IRREGULAR 0.014 Concrete 45.8 45.8 None 0 80.7 80.7 None 123.1 123.1 None 141.7 141.8 None CHAN10642 C ZCH10140A 0 0 1 IRREGULAR 0.100 Concrete 45.5 45.5 None 0 80.3 80.3 None 122.8 122.7 None 141.3 141.3 None CHAN10643 C ZCH10140B 0 0 1 IRREGULAR 0.135 Concrete 82.4 78.8 None 0 139.0 134.3 None 207.2 177.8 None 237.8 192.3 None CHAN10644 C ZCH10140B 0 0 1 IRREGULAR 0.027 Concrete 77.5 77.6 None 0 134.9 123.7 None 204.1 170.5 None 234.6 189.8 None CHAN10645 C ZCH10140B 0 0 1 IRREGULAR 0.026 Concrete 72.5 72.2 None 0 126.6 120.0 None 200.3 168.6 None 227.3 189.5 None CHAN10646 C ZCH10140B 0 0 1 IRREGULAR 0.027 Concrete 71.8 71.6 None 0 125.2 119.3 None 195.7 166.7 None 222.8 187.1 None CHAN10647 C ZCH10140B 0 0 1 IRREGULAR 0.135 Concrete 71.5 71.3 None 0 124.6 119.1 None 194.6 166.2 None 221.8 186.5 None DTCH10441 C 0 0 1 IRREGULAR 0.554 Concrete 6.6 6.6 None 0 11.7 11.7 None 17.8 17.8 None 20.3 20.3 None DTCH10442 C 0 0 1 IRREGULAR 0.060 Concrete 6.4 6.4 None 0 11.5 11.5 None 17.5 17.5 None 20.0 20.0 None DTCH10443 C 0 0 1 IRREGULAR 0.060 Concrete 6.2 6.2 None 0 11.3 11.3 None 17.1 17.1 None 19.5 19.5 None DTCH10444 C 0 0 1 IRREGULAR 0.060 Concrete 6.0 6.0 None 0 10.8 10.8 None 16.4 16.4 None 18.9 18.9 None DTCH10445 C 0 0 1 IRREGULAR 0.060 Concrete 6.0 6.0 None 0 10.7 10.7 None 16.4 16.4 None 19.0 19.0 None DTCH10446 C 0 0 1 IRREGULAR 0.060 Concrete 5.8 5.8 None 0 10.6 10.6 None 16.2 16.2 None 18.7 18.7 None DTCH10447 C 0 0 1 IRREGULAR 0.060 Concrete 5.0 5.0 None 0 10.2 10.2 None 15.7 15.7 None 18.2 25.6 None DTCH10448 C 0 0 1 IRREGULAR 0.554 Concrete 5.0 5.0 None 0 10.2 10.2 None 15.7 15.6 None 18.2 19.8 Downstream CHAN10648 C ZCH10039 0 0 1 IRREGULAR 0.170 Concrete 46.4 46.4 None 0 86.4 80.3 None 132.5 113.9 None 152.0 122.2 None CHAN10649 C ZCH10039 0 0 1 IRREGULAR 0.063 Concrete 45.5 45.5 None 0 83.2 79.5 None 129.7 113.3 None 149.4 122.0 None CHAN10650 C ZCH10039 0 0 1 IRREGULAR 0.170 Concrete 45.3 45.2 None 0 82.7 79.3 None 129.3 113.0 None 148.9 121.9 None CHAN10651 C ZCH10068 0 0 1 IRREGULAR 0.212 Concrete 64.9 66.5 None 0 121.2 121.1 None 190.0 176.1 None 220.7 197.5 None CHAN10652 C ZCH10068 0 0 1 IRREGULAR 0.034 Concrete 67.5 69.1 None 0 120.4 120.4 None 189.3 175.6 None 219.9 197.0 None CHAN10653 C ZCH10068 0 0 1 IRREGULAR 0.034 Concrete 62.6 64.3 None 0 121.2 121.1 None 189.8 176.0 None 220.4 197.4 None CHAN10654 C ZCH10068 0 0 1 IRREGULAR 0.034 Concrete 60.0 61.5 None 0 119.9 119.9 None 187.8 175.0 None 218.1 196.3 None CHAN10655 C ZCH10068 0 0 1 IRREGULAR 0.212 Concrete 59.1 60.5 None 0 118.5 118.7 None 186.4 174.1 None 216.5 195.4 None CHAN10657 C ZCH10082 0 0 1 IRREGULAR 0.021 Concrete 204.6 222.7 None 0 397.7 391.5 None 613.2 508.5 None 677.8 541.9 None CHAN10658 C ZCH10138 0 0 1 IRREGULAR 0.027 Concrete 280.8 303.8 Upstream 0 544.2 489.8 Upstream 843.3 620.7 Upstream 970.0 696.6 Upstream CHAN10659 C ZCH10138 0 0 1 IRREGULAR 0.028 Concrete 280.6 301.2 Downstream 0 544.1 474.6 Downstream 844.8 600.6 Downstream 970.8 687.6 Downstream CHAN10661 C ZCH10086 0 0 1 IRREGULAR 0.034 Concrete 50.8 50.8 None 0 90.5 90.0 None 134.7 127.3 None 153.5 140.0 None CHAN10663 C ZCH10103A 0 0 1 IRREGULAR 0.045 Concrete 94.0 104.1 Downstream 0 182.7 163.0 Downstream 287.8 231.7 Downstream 337.0 246.4 Downstream CHAN10666 C ZCH10103B 0 0 1 IRREGULAR 0.018 Concrete 97.7 109.4 None 0 189.9 173.4 None 299.5 210.1 Downstream 338.4 222.2 Downstream CHAN10667 C ZCH10103C 0 0 1 IRREGULAR 0.071 Concrete 102.6 116.0 None 0 198.7 184.9 None 312.3 225.4 Upstream 335.0 238.9 Upstream CHAN10668 C ZCH10103C 0 0 1 IRREGULAR 0.575 Concrete 102.6 116.0 Downstream 0 198.7 184.2 Downstream 309.2 237.2 Downstream 342.7 250.6 Downstream CHAN10670 C ZCH10103D 0 0 1 IRREGULAR 0.069 Concrete 96.8 102.6 None 0 185.0 156.0 None 287.2 217.7 None 331.7 245.0 Downstream CHAN10671 C ZCH10103E 0 0 1 IRREGULAR 0.041 Concrete 98.9 105.8 None 0 188.4 161.5 None 292.3 225.8 None 338.6 254.4 Upstream CHAN10672 C ZCH10103E 0 0 1 IRREGULAR 0.013 Concrete 98.4 105.0 None 0 188.4 161.1 None 291.8 225.2 None 339.2 254.0 None CHAN10673 C ZCH10103E 0 0 1 IRREGULAR 0.013 Concrete 98.3 104.8 None 0 189.8 161.9 None 291.9 224.7 None 339.0 253.2 None CHAN10674 C ZCH10103E 0 0 1 IRREGULAR 0.041 Concrete 97.9 104.0 None 0 184.4 158.0 None 285.0 222.1 Downstream 331.2 245.4 Downstream CHAN10675 C ZCH10122A 0 0 1 IRREGULAR 0.087 Concrete 88.1 91.9 None 0 169.9 136.9 None 263.5 189.1 None 304.5 212.4 None CHAN10676 C ZCH10122A 0 0 1 IRREGULAR 0.767 Concrete 88.1 91.9 None 0 169.9 136.9 None 263.4 189.2 None 304.5 212.4 None CHAN10677 C ZCH10122B 0 0 1 IRREGULAR 0.028 Concrete 68.2 69.5 None 0 130.0 105.1 None 201.0 142.8 None 232.5 160.1 None CHAN10678 C ZCH10122B 0 0 1 IRREGULAR 0.200 Concrete 68.2 69.5 None 0 130.0 105.1 None 201.0 142.7 None 232.5 160.0 None CHAN10679 C ZCH10122C 0 0 1 IRREGULAR 0.028 Concrete 70.0 71.2 None 0 133.5 107.4 None 206.5 145.8 None 238.9 163.6 None CHAN10680 C ZCH10122C 0 0 1 IRREGULAR 0.200 Concrete 69.9 71.2 None 0 133.5 107.3 None 206.4 145.6 None 238.8 163.5 None CHAN10681 C ZCH10058B 0 0 1 IRREGULAR 0.035 Concrete 20.5 21.4 None 0 37.7 38.8 None 56.3 56.9 None 64.7 65.2 None CHAN10682 C ZCH10058B 0 0 1 IRREGULAR 0.237 Concrete 20.4 21.4 None 0 37.6 38.8 None 56.3 56.9 None 64.7 65.2 None DTCH10449 C CH999 0 0 1 IRREGULAR 0.062 Concrete 36.2 36.4 None 0 66.7 65.7 None 103.9 95.2 None 120.5 106.5 None DTCH10451 C CH999 0 0 1 IRREGULAR 0.056 Concrete 35.8 35.9 None 0 66.2 65.3 None 103.2 94.8 None 119.7 106.1 None CHAN10683 C CH042 0 0 1 IRREGULAR 0.044 Earthen 116.6 130.6 None 0 198.3 228.8 None 297.1 327.2 None 341.4 348.6 None CHAN10684 C CH042 0 0 1 IRREGULAR 0.018 Earthen 114.5 127.2 None 0 195.6 221.0 None 293.7 322.2 None 337.3 345.7 None CHAN10685 C CH042 0 0 1 IRREGULAR 0.018 Earthen 109.4 119.5 None 0 189.0 205.9 None 285.7 314.2 None 328.5 339.1 None CHAN10686 C CH042 0 0 1 IRREGULAR 0.018 Earthen 92.3 97.1 None 0 202.9 222.1 None 293.2 324.1 None 336.6 346.8 None CHAN10687 C CH042 0 0 1 IRREGULAR 0.018 Earthen 91.8 95.9 None 0 196.9 213.4 None 288.4 317.5 None 331.0 341.9 None CHAN10688 C CH042 0 0 1 IRREGULAR 0.047 Earthen 88.4 91.7 None 0 181.8 194.3 None 279.2 288.7 Downstream 321.3 299.3 Downstream CHAN10689 C ZCH10089 0 0 1 IRREGULAR 0.032 Concrete 98.1 101.3 None 0 201.4 215.4 Upstream 315.1 313.9 Upstream 362.9 332.0 Upstream

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 85 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
CHAN10690 C ZCH10089 0 0 1 IRREGULAR 0.016 Concrete 98.4 101.6 Downstream 0 201.4 214.9 Downstream 314.6 312.9 Downstream 362.1 331.3 Downstream CHAN10691 C ZCH10033A 0 0 1 IRREGULAR 0.060 Concrete 111.1 112.8 None 0 204.8 197.5 None 319.2 279.3 None 368.4 304.4 None CHAN10692 C ZCH10033A 0 0 1 IRREGULAR 0.010 Concrete 109.0 109.7 Downstream 0 202.9 196.1 Downstream 311.8 271.5 Downstream 361.5 299.6 Downstream CHAN10693 C ZCH10033B 0 0 1 IRREGULAR 0.046 Concrete 191.2 198.1 Upstream 0 378.0 393.8 Upstream 591.0 574.2 Upstream 681.8 617.2 Upstream CHAN10695 C ZCH10033B 0 0 1 IRREGULAR 0.056 Concrete 191.0 198.1 Downstream 0 368.3 379.7 Downstream 491.4 492.1 Downstream 523.9 515.4 Downstream CHAN10696 C 0 0 1 IRREGULAR 0.280 Concrete 32.3 32.5 None 0 53.2 53.6 None 79.3 79.7 None 90.0 90.4 None CHAN10697 C 0 0 1 IRREGULAR 0.076 Concrete 31.9 32.1 None 0 52.7 53.0 None 78.5 78.9 None 89.2 89.5 None CHAN10698 C 0 0 1 IRREGULAR 0.076 Concrete 31.0 31.1 None 0 51.4 51.6 None 76.9 77.1 None 87.5 87.7 None CHAN10699 C 0 0 1 IRREGULAR 0.279 Concrete 30.6 30.7 None 0 50.8 51.0 Downstream 75.8 76.0 Downstream 86.2 86.4 Downstream CHAN10700 C 0 0 1 IRREGULAR 0.285 Concrete 16.1 16.1 None 0 28.9 29.0 None 43.9 44.0 None 50.2 50.2 None CHAN10701 C 0 0 1 IRREGULAR 0.045 Concrete 15.1 15.1 None 0 28.2 28.2 None 42.9 42.9 None 49.0 49.0 None CHAN10702 C 0 0 1 IRREGULAR 0.285 Concrete 15.0 15.0 None 0 28.1 28.0 None 42.6 42.6 None 48.8 48.7 None CHAN10703 C 0 0 1 IRREGULAR 0.352 Concrete 3.0 3.0 None 0 4.9 5.0 None 7.4 7.4 None 8.4 8.4 None CHAN10704 C 0 0 1 IRREGULAR 0.087 Concrete 2.7 2.7 None 0 4.6 4.6 None 7.0 7.0 None 7.9 7.9 None CHAN10705 C 0 0 1 IRREGULAR 0.352 Concrete 2.6 2.6 None 0 4.5 4.5 None 6.9 6.9 None 7.8 7.8 None CHAN10706 C 0 0 1 IRREGULAR 0.441 Concrete 8.8 8.8 None 0 15.2 15.2 None 22.6 22.6 None 25.7 25.8 None CHAN10707 C 0 0 1 IRREGULAR 0.095 Concrete 8.4 8.4 None 0 14.0 14.0 None 21.6 21.6 None 24.7 24.7 None CHAN10708 C 0 0 1 IRREGULAR 0.095 Concrete 7.4 7.4 None 0 13.2 13.2 None 20.4 20.4 None 23.5 23.5 None CHAN10709 C 0 0 1 IRREGULAR 0.095 Concrete 7.4 7.4 None 0 13.0 13.0 None 20.1 20.1 None 23.1 23.1 None CHAN10710 C 0 0 1 IRREGULAR 0.091 Concrete 6.6 6.6 None 0 12.4 12.4 None 19.2 19.2 None 22.3 22.3 None CHAN10711 C 0 0 1 IRREGULAR 0.548 Concrete 6.4 6.4 None 0 12.1 12.1 None 18.9 18.9 None 21.9 21.9 None CHAN10712 C 0 0 1 IRREGULAR 0.253 Concrete 16.9 16.9 None 0 26.8 26.3 None 39.3 38.0 None 44.3 41.3 None CHAN10713 C 0 0 1 IRREGULAR 0.208 Concrete 16.6 16.9 None 0 26.4 26.2 None 38.7 35.1 None 43.7 37.1 None CHAN10714 C 0 0 1 IRREGULAR 0.179 Concrete 15.1 15.1 None 0 25.9 22.7 None 36.3 29.9 None 41.2 32.7 None CHAN10715 C 0 0 1 IRREGULAR 0.459 Concrete 15.0 74.6 Downstream 0 22.3 74.9 Downstream 90.5 116.9 Downstream 115.3 84.1 Downstream CHAN10716 C 0 0 1 IRREGULAR 0.390 RCP 1.0 1.0 None 0 1.7 1.7 None 2.5 2.5 None 2.8 2.8 None CHAN10717 C 0 0 1 IRREGULAR 0.029 RCP 0.7 0.7 None 0 1.4 1.4 None 2.1 2.1 None 2.4 2.4 None CHAN10718 C 0 0 1 IRREGULAR 0.414 RCP 0.7 0.7 None 0 1.3 1.3 None 2.1 2.1 None 2.4 2.4 None DTCH10459 C 0 0 1 IRREGULAR 0.090 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None DTCH10460 C 0 0 1 IRREGULAR 0.042 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None DTCH10461 C 0 0 1 IRREGULAR 0.090 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None CHAN10719 C 0 0 1 IRREGULAR 1.015 RCP 7.7 7.7 None 0 13.4 13.4 None 20.2 20.2 None 23.0 23.0 None CHAN10720 C 0 0 1 IRREGULAR 0.057 RCP 7.3 7.3 None 0 12.9 12.9 None 19.5 19.5 None 22.2 22.2 None CHAN10721 C 0 0 1 IRREGULAR 0.057 RCP 7.1 7.1 None 0 12.3 12.3 None 18.5 18.5 None 21.2 21.2 None CHAN10722 C 0 0 1 IRREGULAR 0.057 RCP 6.8 6.8 None 0 12.0 12.0 None 18.1 18.1 None 20.7 20.7 None CHAN10723 C 0 0 1 IRREGULAR 1.179 RCP 6.8 6.8 None 0 12.0 12.0 None 18.1 18.1 None 20.6 20.6 None CHAN10724 C 0 0 1 IRREGULAR 0.067 RCP 27.2 28.8 None 0 54.6 51.5 None 84.5 74.9 None 97.3 84.3 None CHAN10725 C 0 0 1 IRREGULAR 0.092 RCP 27.2 28.7 None 0 54.6 51.5 None 84.4 74.9 None 97.3 84.3 None CHAN10726 C 0 0 1 IRREGULAR 0.259 RCP 13.0 13.2 None 0 24.7 25.0 None 38.0 38.2 None 43.6 42.0 None CHAN10727 C 0 0 1 IRREGULAR 0.022 RCP 12.9 13.0 None 0 24.5 24.5 None 37.6 37.2 None 43.1 41.6 None CHAN10728 C 0 0 1 IRREGULAR 0.270 RCP 12.2 12.4 None 0 24.0 24.0 None 37.0 36.6 None 42.5 41.2 None CHAN10731 C 0 0 1 IRREGULAR 0.181 RCP 357.7 353.3 None 0 574.7 587.0 None 882.2 896.8 Downstream 1011.9 1027.0 Downstream CHAN10732 C 0 0 1 IRREGULAR 0.230 RCP 33.9 34.1 None 0 55.7 56.0 None 82.8 82.4 None 94.0 92.4 None CHAN10733 C 0 0 1 IRREGULAR 0.024 RCP 34.7 34.9 None 0 57.0 56.9 None 84.4 83.5 None 95.6 93.8 None CHAN10734 C 0 0 1 IRREGULAR 0.025 RCP 32.6 32.7 None 0 53.8 53.9 None 79.9 78.9 None 91.0 89.6 None CHAN10735 C 0 0 1 IRREGULAR 0.334 RCP 32.2 32.4 None 0 53.5 53.6 None 79.4 78.4 None 90.5 89.1 None CHAN10736 C 0 0 1 IRREGULAR 0.207 RCP 307.9 427.4 None 0 552.3 671.3 None 973.4 1232.6 None 1126.1 1374.1 None CHAN10740 C 0 0 1 IRREGULAR 0.104 RCP 274.4 290.1 None 0 482.7 480.5 None 750.6 755.4 None 868.9 859.5 None DTCH10462 C 0 0 1 IRREGULAR 0.054 RCP 15.4 19.0 None 0 30.0 34.9 None 48.2 53.1 None 55.3 60.7 None DTCH10463 C 0 0 1 IRREGULAR 0.026 RCP 15.3 18.2 None 0 29.6 33.6 None 48.1 52.1 None 55.0 59.7 None DTCH10464 C 0 0 1 IRREGULAR 0.026 RCP 15.1 17.8 None 0 29.2 32.7 None 46.3 49.4 None 53.4 56.8 None DTCH10465 C 0 0 1 IRREGULAR 0.026 RCP 15.2 17.8 None 0 29.1 32.6 None 46.2 49.2 None 53.3 56.5 None DTCH10466 C 0 0 1 IRREGULAR 0.054 RCP 15.1 17.7 None 0 29.1 32.5 None 46.1 49.0 None 53.2 56.4 None CHAN10741 C ZCH10137 0 0 1 IRREGULAR 0.040 Concrete 283.0 298.8 Upstream 0 549.6 458.1 Upstream 859.4 589.1 Upstream 984.4 683.9 Upstream CHAN10743 C ZCH10137 0 0 1 IRREGULAR 0.127 Concrete 281.8 415.8 Downstream 0 549.2 495.3 Downstream 840.1 521.8 Downstream 928.0 606.3 Downstream CHAN10744 C ZCH10058A 0 0 1 IRREGULAR 0.341 Concrete 20.6 21.4 None 0 37.2 38.3 None 55.8 56.5 None 63.7 64.2 None CHAN10745 C ZCH10058A 0 0 1 IRREGULAR 0.058 Concrete 20.3 21.2 None 0 37.0 38.0 None 55.5 56.2 None 63.4 63.9 None CHAN10746 C ZCH10058A 0 0 1 IRREGULAR 0.059 Concrete 19.5 20.3 None 0 36.0 37.0 None 53.9 54.5 None 61.9 62.3 None CHAN10747 C ZCH10058A 0 0 1 IRREGULAR 0.315 Concrete 19.4 20.3 None 0 36.0 37.0 None 53.9 54.5 None 61.9 62.3 None CHAN10748 C ZCH10030A 0 0 1 IRREGULAR 0.068 Concrete 239.2 262.5 None 0 461.0 461.0 None 714.9 625.6 None 804.2 672.3 None CHAN10749 C ZCH10030A 0 0 1 IRREGULAR 0.021 Concrete 238.3 261.0 None 0 460.1 460.6 None 714.2 625.1 None 803.6 672.1 None CHAN10750 C ZCH10030A 0 0 1 IRREGULAR 0.022 Concrete 237.4 259.8 None 0 459.4 460.3 None 713.9 625.0 None 803.4 672.2 None CHAN10751 C ZCH10030A 0 0 1 IRREGULAR 0.068 Concrete 237.2 259.4 None 0 459.0 460.1 None 713.5 624.7 None 802.9 672.1 Downstream DTCH10467 C CH999 0 0 1 IRREGULAR 0.140 Concrete 49.7 49.9 None 0 89.9 86.7 None 140.1 123.0 None 161.4 133.2 None DTCH10468 C CH999 0 0 1 IRREGULAR 0.054 Concrete 49.6 49.8 None 0 89.6 86.6 None 139.6 122.8 None 160.7 133.2 None DTCH10469 C CH999 0 0 1 IRREGULAR 0.054 Concrete 49.0 49.2 None 0 88.9 86.2 None 138.5 122.3 None 159.3 132.9 None DTCH10470 C CH999 0 0 1 IRREGULAR 0.053 Concrete 48.8 49.0 None 0 88.4 85.9 None 137.5 121.9 None 158.6 132.7 None DTCH10471 C CH999 0 0 1 IRREGULAR 0.053 Concrete 48.6 48.7 None 0 88.0 85.6 None 137.1 121.8 None 158.0 132.6 None DTCH10472 C CH999 0 0 1 IRREGULAR 0.053 Concrete 48.5 48.6 None 0 87.7 85.5 None 136.3 121.4 None 157.2 132.4 None DTCH10473 C CH999 0 0 1 IRREGULAR 0.055 Concrete 48.3 48.4 None 0 87.5 85.3 None 136.0 121.4 None 156.9 132.3 None DTCH10474 C CH999 0 0 1 IRREGULAR 0.053 Concrete 48.4 48.5 None 0 87.3 85.2 None 135.6 121.2 None 156.4 132.2 None DTCH10475 C CH999 0 0 1 IRREGULAR 0.053 Concrete 48.2 48.3 None 0 86.9 84.9 None 135.0 121.0 None 155.7 132.1 None DTCH10476 C CH999 0 0 1 IRREGULAR 0.149 Concrete 48.2 48.3 None 0 86.9 84.9 None 134.9 120.9 None 155.6 132.0 None CHAN10752 C ZCH10048 0 0 1 IRREGULAR 0.007 Concrete 64.1 66.8 None 0 126.6 128.7 None 199.2 188.0 None 232.2 209.5 None CHAN10754 C ZCH10048 0 0 1 IRREGULAR 0.010 Concrete 105.5 137.5 None 0 126.1 124.3 None 197.2 184.9 None 229.3 206.7 None CHAN10755 C ZCH10048 0 0 1 IRREGULAR 0.025 Concrete 107.6 138.3 Downstream 0 123.4 124.6 Downstream 193.6 184.8 Downstream 227.5 206.6 Downstream

APPENDIX E
EXISTING CONDUITS: SUMMARY TABLE
City of San Marcos Drainage Master Plan 86 of 86 April 2019 Facility ID SubWatershed Original
FacilityID
D' or H'
(diameter) or
(height)
B' (width) Barrels Shape Slope
(ft/ft) Material Q2
(cfs)
Qcon
(2-year)
(cfs)
Surcharging
(2-year) Qcon vs Qcap Q10 (cfs)
Qcon
(10-year)
(cfs)
Surcharging
(10-year) Q50
(cfs)
Qcon
(50-year)
(cfs)
Surcharging
(50-year)
Q100
(cfs)
Qcon
(100-
year)
(cfs)
Surcharging
(100-year)
Conveyance Info
Existing Condition Storm Conveyance Results Summary Table Dimensions 2-year 10-year 50-year 100-year
DTCH10486 C DD049 0 0 1 IRREGULAR 0.067 RCP 14.4 14.5 None 0 24.3 24.1 None 36.7 31.5 Downstream 41.9 31.8 Both Upstream and Downstream CHAN10756 C ZCH10112 0 0 1 IRREGULAR 0.013 Earthen 61.7 61.8 None 0 109.8 109.4 None 162.2 156.5 None 184.6 173.6 None CHAN10757 C ZCH10112 0 0 1 IRREGULAR 0.094 Earthen 61.6 61.8 None 0 109.7 109.3 None 162.0 156.4 None 184.4 173.4 None CHAN10758 C ZCH10050 0 0 1 IRREGULAR 0.015 Concrete 51.1 51.1 None 0 90.6 90.2 None 133.8 127.3 None 151.8 139.6 None CHAN10759 C ZCH10050 0 0 1 IRREGULAR 0.107 Concrete 51.0 51.0 None 0 90.5 90.0 None 133.5 127.1 None 151.5 139.4 None FLOW10082 C 0 0 1 DUMMY 0.040 RCP 289.2 2034.0 Upstream 0 562.3 2691.8 Upstream 845.9 2754.1 Upstream 927.3 2915.7 Upstream CHAN10770 C ZCH10084 0 0 1 IRREGULAR 2.196 Concrete 287.4 2033.4 Downstream 0 559.0 2690.0 Downstream 841.3 2742.2 Downstream 922.1 2914.8 Downstream FLOW10086 C 0 0 1 DUMMY 0.016 RCP 36.3 36.5 None 0 59.1 59.4 None 87.8 90.3 None 99.4 99.6 None CHAN10771 C 0 0 1 IRREGULAR 0.076 EARTHEN 97.9 97.6 None 0 177.2 173.8 Downstream 272.5 243.4 Downstream 348.4 274.0 Both Upstream and Downstream CHAN10772 C 0 0 1 IRREGULAR 0.095 EARTHEN 96.9 96.9 Downstream 0 173.1 172.6 Both Upstream and Downstream 265.0 236.1 Both Upstream and Downstream 334.5 247.5 Both Upstream and Downstream CHAN10773 C 0 0 1 IRREGULAR 0.081 EARTHEN 96.3 96.0 Both Upstream and Downstream 0 171.8 109.8 Both Upstream and Downstream 263.6 132.6 Both Upstream and Downstream 326.3 138.7 Both Upstream and Downstream CHAN10774 C 0 0 1 IRREGULAR 0.418 EARTHEN 96.1 40.9 Both Upstream and Downstream 0 171.6 39.7 Both Upstream and Downstream 263.4 40.8 Both Upstream and Downstream 325.5 46.9 Both Upstream and Downstream FLOW10087 C 0 0 1 IRREGULAR 0.038 RCP 126.1 48.7 None 0 223.7 70.7 None 342.0 95.4 None 390.7 106.3 None FLOW10088 C 0 0 1 IRREGULAR 0.079 EARTHEN 68.1 70.8 None 0 114.5 117.8 None 174.2 172.5 None 199.3 192.2 None CHAN10775 C 0 0 1 IRREGULAR 0.501 Concrete 127.7 50.6 None 0 227.5 74.5 None 347.5 101.1 None 396.7 112.9 None CHAN10776 C 0 0 1 IRREGULAR 0.033 Concrete 127.0 50.5 None 0 226.0 74.3 None 347.4 100.9 None 396.3 112.6 None CHAN10777 C 0 0 1 IRREGULAR 0.033 Concrete 133.9 50.3 None 0 233.0 72.1 None 344.6 105.6 None 393.3 115.9 None CHAN10778 C 0 0 1 IRREGULAR 0.033 Concrete 130.2 50.2 None 0 223.5 71.6 None 340.1 103.1 None 389.0 114.0 None CHAN10779 C 0 0 1 IRREGULAR 0.033 Concrete 126.8 49.9 None 0 222.6 71.1 None 338.6 100.8 None 387.9 112.0 None CHAN10780 C 0 0 1 IRREGULAR 0.524 Concrete 126.8 49.9 None 0 222.5 71.1 None 338.5 100.8 None 387.8 112.0 None CHAN10783 C 0 0 1 IRREGULAR 0.064 Concrete 188.8 125.7 None 0 336.6 205.9 None 509.3 294.6 None 582.1 333.0 None PIPE14832 C ZPIP17857 1.5 0 1 CIRCULAR 0.083 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None PIPE14833 C ZPIP17856 2 0 1 CIRCULAR 0.065 RCP 0.0 0.0 None 0 0.0 0.0 None 0.0 0.0 None 0.0 0.0 None J#17729
San Marcos Drainage Master Plan

NAMING CONVENTION FOR RESULTS IN APPENDIX E

INTRODUCTION
The naming convention of junctions is based on the classification of junctions per the field Structure Type Description from the existing inventory SD_StructureNode provided by the City of San Marcos as a part of the City of San Marcos Drainage Master Plan.

The classification of conduits (storm drain conveyance) is based on the classification of junctions per the field Conduit type from the existing inventory SD_Main and SD_Channel provided by the City of San Marcos as a part of the City of San Marcos Drainage Master Plan.

Junctions
Refer to the junctions’ schema for the description of junction classification.

Facility ID Prefix Junction Classification
CBIN Curb Inlet
CBOL Curb Outlet
CINT Channel
Intersection/Confluence
CLEN Cleanout
DETB Detention Basin
INLT Inlet
OTHR Other
OTLT Outlet
SEPR Separator
J#17729
San Marcos Drainage Master Plan
Conduits
Refer to the conduits’ schema for the description of conduit classification.

Facility ID Prefix Conduit Classification
CHAN Channel wider than 5 ft
CULV Culvert
DTCH Ditch wider than 5 ft
FLOW Flowline
PIPE Storm Main

APPENDIX E
EXISTING OUTFALLS : SUMMARY TABLE
City of San Marcos Drainage Master Plan 1 of 3 April 2019 Outfall ID Discharge (cfs) Total Contributing
Area(ac) Unit Discharge (cfs/ac) Total Contributing
Impervious Area (ac)
CBIN11889 187.6 70.9 2.6 54.7
CBIN11890 19.5 4.5 4.3 3.6
CBOL10007 34.1 8.4 4.1 4.6
CINT10001 40.1 8.9 4.5 8.0
CINT10002 121.6 36.2 3.4 19.7
CINT10003 260.6 122.6 2.1 77.8
CINT10004 124.3 95.1 1.3 34.7
CINT10005 310.0 103.5 3.0 86.8
CINT10006 404.8 174.6 2.3 80.5
CLEN11555 286.0 97.9 2.9 48.1
CLEN11556 85.2 37.7 2.3 21.7
INLT10952 85.7 44.7 1.9 8.0
INLT10953 77.4 26.7 2.9 24.1
OTHR11733 266.6 187.7 1.4 61.8
OTHR11735 95.1 18.8 5.1 13.1
OTHR11736 0.0 0.0 0.0 0.0
OTHR11737 486.7 399.1 1.2 120.0
OTHR11738 14.4 3.7 3.9 2.8
OTHR11739 13.3 3.6 3.7 1.2
OTHR11740 85.0 35.7 2.4 5.4
OTHR11741 305.0 86.1 3.5 50.5
OTHR11742 655.0 260.0 2.5 67.1
OTHR11743 404.1 146.8 2.8 95.5
OTHR11744 545.8 1351.7 0.4 379.3
OTHR11745 65.7 36.7 1.8 16.2
OTHR11746 9.4 2.2 4.3 1.8
OTHR11747 10.1 2.3 4.4 1.6
OTHR11748 2915.7 498.3 5.9 228.9
OTHR11749 1027.2 857.1 1.2 454.7
OTHR11750 333.0 260.8 1.3 94.5
OTHR11751 149.2 53.3 2.8 14.8
OTLT10287 325.6 141.8 2.3 98.8
OTLT10288 34.3 8.1 4.2 4.8
OTLT10289 25.4 6.5 3.9 3.8
OTLT10290 179.5 64.6 2.8 26.1
OTLT10291 612.8 356.7 1.7 140.5
OTLT10292 31.7 9.6 3.3 5.5
OTLT10293 77.4 39.8 1.9 21.2
OTLT10294 179.7 65.1 2.8 32.6
OTLT10295 177.5 60.5 2.9 31.1
OTLT10296 57.4 19.2 3.0 6.2
OTLT10297 524.5 392.3 1.3 115.1
OTLT10298 211.2 60.2 3.5 30.5
OTLT10299 192.2 58.7 3.3 33.6
OTLT10300 202.5 98.0 2.1 30.8
OTLT10301 227.2 176.3 1.3 36.3
OTLT10302 678.6 619.5 1.1 120.1
OTLT10303 259.5 189.8 1.4 70.8
OTLT10304 46.8 19.9 2.3 5.6
OTLT10305 34.0 9.3 3.7 3.9

OUTFALL SUMMARY

APPENDIX E
EXISTING OUTFALLS : SUMMARY TABLE
City of San Marcos Drainage Master Plan 2 of 3 April 2019 Outfall ID Discharge (cfs) Total Contributing
Area(ac) Unit Discharge (cfs/ac) Total Contributing
Impervious Area (ac)
CBIN11889 187.6 70.9 2.6 54.7
OTLT10306 2760.3 2829.3 1.0 624.2
OTLT10307 133.1 39.2 3.4 23.7
OTLT10308 69.7 24.5 2.8 7.5
OTLT10309 11.9 2.8 4.2 2.5
OTLT10310 368.5 148.9 2.5 34.2
OTLT10311 331.7 196.2 1.7 83.4
OTLT10312 40.0 12.6 3.2 4.4
OTLT10313 36.3 20.0 1.8 9.5
OTLT10314 538.7 412.9 1.3 140.0
OTLT10315 11.8 3.2 3.7 2.4
OTLT10316 187.1 94.4 2.0 33.3
OTLT10317 159.5 101.2 1.6 33.2
OTLT10318 11.8 3.0 4.0 2.2
OTLT10319 3138.4 3108.2 1.0 1310.8
OTLT10320 518.2 424.8 1.2 147.0
OTLT10321 120.4 42.1 2.9 29.6
OTLT10322 104.7 27.0 3.9 24.2
OTLT10323 25.6 6.1 4.2 4.6
OTLT10324 445.2 277.4 1.6 186.3
OTLT10325 8.4 2.0 4.2 1.9
OTLT10326 6.6 1.6 4.2 1.2
OTLT10327 33.8 8.0 4.2 5.8
OTLT10328 17.9 5.2 3.5 3.2
OTLT10329 141.6 46.4 3.1 39.5
OTLT10330 213.5 103.2 2.1 60.8
OTLT10331 8.8 2.2 4.0 0.9
OTLT10332 728.8 408.0 1.8 151.3
OTLT10333 85.4 21.1 4.0 17.2
OTLT10334 33.8 13.8 2.5 1.5
OTLT10335 7.3 2.3 3.1 0.4
OTLT10336 36.0 10.0 3.6 2.0
OTLT10337 158.4 71.0 2.2 14.5
OTLT10338 975.3 2039.2 0.5 1418.8
OTLT10339 17.7 4.7 3.8 3.0
OTLT10340 486.4 189.6 2.6 83.3
OTLT10341 45.6 10.0 4.6 8.5
OTLT10342 18.0 5.7 3.2 1.5
OTLT10343 0.0 10.7 0.0 4.3
OTLT10344 179.0 76.1 2.4 40.2
OTLT10345 65.7 28.9 2.3 8.4
OTLT10346 486.3 163.2 3.0 111.1
OTLT10347 12.7 3.0 4.2 2.6
OTLT10348 1266.7 687.0 1.8 543.0
OTLT10349 135.6 44.9 3.0 37.9
OTLT10350 18.9 5.6 3.4 4.9
OTLT10351 176.1 87.7 2.0 62.1
OTLT10352 25.9 6.9 3.8 5.2
OTLT10353 466.5 218.8 2.1 80.7
OTLT10354 375.8 250.1 1.5 97.9
OTLT10355 1674.1 1011.8 1.7 454.5
OTLT10356 548.1 320.6 1.7 182.5

APPENDIX E
EXISTING OUTFALLS : SUMMARY TABLE
City of San Marcos Drainage Master Plan 3 of 3 April 2019 Outfall ID Discharge (cfs) Total Contributing
Area(ac) Unit Discharge (cfs/ac) Total Contributing
Impervious Area (ac)
CBIN11889 187.6 70.9 2.6 54.7
OTLT10357 21.2 5.6 3.8 4.5
OTLT10358 70.2 21.8 3.2 7.2
OTLT10359 134.8 40.5 3.3 12.4
OTLT10360 24.6 5.9 4.2 2.7
OTLT10361 131.6 35.8 3.7 19.8
OTLT10362 84.3 31.6 2.7 7.3

APPENDIX E
RECOMMENDED FACILITIES : SUMMARY TABLE
City of San Marcos Drainage Master Plan 1 of 4 April 2019 Facility ID SubWatershed Original
FacilityID
Contributing
Area (acres)
D' or H'
(diameter)/(
height)
B'
(width) Barrels Shape Material Q100 (cfs)
Qcon
(cfs) Surcharging
D' or H'
(diameter)/(
height)
(Rec)
B'
(width)
(Rec)
Barrels
(Rec)
Material
(Rec) Qcon (cfs) Surcharging(Rec) TotalCost PriorityRating PIPE10005 A1 ZPIP10238 11.1 1.5 0 1 CIRCULAR RCP 33.2 23.3 Both Upstream and Downstream 2.5 0 1 RCP 34.2 Both Upstream and Downstream $ 75,660 60 PIPE10126 A1 ZPIP13609 8.6 1.5 0 1 CIRCULAR RCP 37.2 33.2 Both Upstream and Downstream 2.5 0 1 RCP 35.4 Both Upstream and Downstream $ 26,793 70 PIPE10147 A1 ZPIP13640 13.4 1.5 0 1 CIRCULAR RCP 43.3 24.2 Upstream 3.0 0 1 RCP 43.2 None $ 130,822 55 PIPE10148 A1 ZPIP10703 13.4 1.5 0 1 CIRCULAR RCP 43.4 27.9 Both Upstream and Downstream 3.0 0 1 RCP 43.5 None $ 74,846 80 PIPE10149 A1 ZPIP17003 1.3 1.5 0 1 CIRCULAR RCP 5.5 6.8 Both Upstream and Downstream 2.0 0 1 RCP 5.5 None $ 43,662 45 PIPE10220 A1 ZPIP13739 11.9 1.5 0 1 CIRCULAR RCP 36.0 20.6 Both Upstream and Downstream 2.5 0 1 RCP 33.3 Both Upstream and Downstream $ 87,142 60 PIPE10314 A1 ZPIP10885 21.2 2.0 0 1 CIRCULAR RCP 129.1 62.6 Upstream 2.5 0 1 RCP 74.9 Upstream $ 31,671 70 PIPE10315 A1 ZPIP10886 20.3 2.0 0 1 CIRCULAR RCP 124.9 61.1 Both Upstream and Downstream 2.5 0 1 RCP 72.8 Both Upstream and Downstream $ 5,272 60 PIPE10316 A1 ZPIP13989 20.3 2.0 0 1 CIRCULAR RCP 125.0 54.0 Both Upstream and Downstream 2.5 0 1 RCP 63.6 Both Upstream and Downstream $ 114,368 60 PIPE10317 A1 ZPIP13990 0.0 1.5 0 1 CIRCULAR RCP 0.8 9.7 Both Upstream and Downstream 2.5 0 1 RCP 14.4 Both Upstream and Downstream $ 18,833 60 CULV10010 A1 CUL023 619.5 4.5 0 1 CIRCULAR RCP 642.0 678.6 Upstream 4.5 0 3 RCP 1028.8 Upstream $ 148,863 65 PIPE10395 A1 ZPIP14329 13.1 1.5 0 1 CIRCULAR RCP 38.6 26.5 Both Upstream and Downstream 2.5 0 1 RCP 33.4 Both Upstream and Downstream $ 21,948 60 PIPE10426 A1 ZPIP11289 37.4 2.0 0 1 CIRCULAR RCP 97.5 73.9 Upstream 4.0 0 1 RCP 97.7 None $ 145,104 70 CULV10013 A1 CUL077B 93.3 3.0 0 1 CIRCULAR RCP 180.9 184.0 Upstream 3.0 0 3 RCP 180.7 None $ 265,511 75 PIPE10554 A1 ZPIP15897 35.3 2.0 0 1 CIRCULAR RCP 97.5 87.5 Both Upstream and Downstream 4.0 0 1 RCP 94.4 None $ 19,251 65 PIPE10591 A1 ZPIP16594 36.9 2.0 0 1 CIRCULAR RCP 97.1 82.3 Both Upstream and Downstream 4.0 0 1 RCP 97.2 None $ 62,817 80 PIPE10626 A1 ZPIP17005 10.5 1.5 0 1 CIRCULAR ABS 35.9 30.4 Both Upstream and Downstream 3.0 0 1 ABS 35.9 None $ 40,630 70 PIPE10634 A1 ZPIP11909 9.5 1.5 0 1 CIRCULAR RCP 31.5 27.3 Both Upstream and Downstream 5.0 0 1 RCP 69.5 Both Upstream and Downstream $ 46,765 65 PIPE10636 A1 ZPIP15948 0.0 1.3 0 1 CIRCULAR RCP 1.4 6.8 Both Upstream and Downstream 2.0 0 1 RCP 22.1 Both Upstream and Downstream $ 11,495 65 CULV10035 A1 CUL027 176.3 2.0 0 1 CIRCULAR RCP 227.4 227.2 Upstream 2.0 0 4 RCP 409.3 Upstream $ 265,198 65 PIPE10691 A2 ZPIP12851 10.0 1.5 0 1 CIRCULAR RCP 34.7 22.0 Both Upstream and Downstream 3.0 0 1 RCP 35.4 None $ 27,504 65 PIPE10692 A2 ZPIP12852 30.2 2.5 0 1 CIRCULAR CMP 92.9 79.2 Upstream 2.5 0 1 RCP 90.6 Upstream $ 135,498 60 PIPE10693 A2 ZPIP12853 27.9 2.0 0 1 CIRCULAR CMP 84.3 71.7 Both Upstream and Downstream 2.0 0 1 RCP 78.5 Both Upstream and Downstream $ 79,666 75 PIPE10742 A2 ZPIP12953 161.1 4.0 0 1 CIRCULAR RCP 584.1 244.2 Both Upstream and Downstream 4.0 0 2 RCP 404.6 Downstream $ 684,387 60 PIPE10752 A2 ZPIP12960 105.2 4.0 0 1 CIRCULAR RCP 394.2 210.6 Both Upstream and Downstream 4.5 0 1 RCP 273.4 None $ 30,791 60 PIPE10769 A2 ZPIP10353 161.1 4.0 0 1 CIRCULAR RCP 585.1 224.9 Both Upstream and Downstream 4.0 0 2 RCP 396.8 Both Upstream and Downstream $ 454,698 60 PIPE10778 A2 ZPIP10356 21.2 1.5 0 1 CIRCULAR RCP 66.0 59.9 Both Upstream and Downstream 2.0 0 1 RCP 62.5 Both Upstream and Downstream $ 13,530 60 PIPE10779 A2 ZPIP10357 161.1 4.0 0 1 CIRCULAR RCP 584.1 220.5 Both Upstream and Downstream 4.0 0 2 RCP 434.8 Both Upstream and Downstream $ 466,861 60 PIPE10780 A2 ZPIP13258 35.4 1.8 0 1 CIRCULAR RCP 87.2 85.5 Both Upstream and Downstream 3.0 0 1 RCP 87.1 Both Upstream and Downstream $ 14,491 65 PIPE10781 A2 ZPIP13259 44.1 2.3 0 1 CIRCULAR RCP 102.8 100.4 Upstream 3.0 0 1 RCP 102.6 Upstream $ 41,845 50 PIPE10921 A2 ZPIP13827 34.4 2.0 0 1 CIRCULAR RCP 83.1 81.4 Both Upstream and Downstream 3.0 0 1 RCP 82.9 None $ 24,181 75 PIPE10922 A2 ZPIP13829 39.6 1.8 0 1 CIRCULAR CMP 97.3 34.7 Both Upstream and Downstream 2.0 0 2 RCP 65.3 Both Upstream and Downstream $ 31,248 60 PIPE10923 A2 ZPIP13868 5.3 1.5 0 1 CIRCULAR RCP 17.6 22.9 Both Upstream and Downstream 2.0 0 1 RCP 30.7 None $ 10,685 60 PIPE10924 A2 ZPIP17047 16.5 2.0 0 1 CIRCULAR RCP 56.2 37.4 Both Upstream and Downstream 2.5 0 1 RCP 51.6 None $ 24,363 60 PIPE10938 A2 ZPIP14131 30.7 2.0 0 1 CIRCULAR RCP 99.0 59.8 Both Upstream and Downstream 3.0 0 1 RCP 92.8 Both Upstream and Downstream $ 95,463 65 PIPE10939 A2 ZPIP14132 30.7 2.0 0 1 CIRCULAR RCP 100.5 70.6 Both Upstream and Downstream 3.0 0 1 RCP 97.7 Downstream $ 31,155 65 PIPE10940 A2 ZPIP14147 35.9 2.0 0 1 CIRCULAR RCP 89.1 86.8 Upstream 3.0 0 1 RCP 88.8 None $ 3,454 75 PIPE10981 A2 ZPIP14259 9.0 2.0 0 1 CIRCULAR Unknown 35.3 30.2 Both Upstream and Downstream 3.0 0 1 RCP 32.6 Both Upstream and Downstream $ 125,530 75 PIPE10982 A2 ZPIP14260 14.5 2.0 0 1 CIRCULAR Unknown 58.0 47.7 Both Upstream and Downstream 3.0 0 1 RCP 51.0 Both Upstream and Downstream $ 127,915 65 PIPE11139 A2 ZPIP11334 17.9 1.8 0 1 CIRCULAR RCP 50.8 40.8 Upstream 2.5 0 1 RCP 50.4 None $ 42,339 50 CULV10062 A2 ZCUL003A 573.8 4.0 8 1 RECT_CLOSED RCP 908.1 936.8 Both Upstream and Downstream 4.0 8 2 RCP 690.3 None $ 79,443 65 PIPE11161 A2 ZPIP14921 50.0 2.0 0 1 CIRCULAR RCP 102.2 35.6 Upstream 3.5 0 1 RCP 87.8 Upstream $ 131,943 70 PIPE11162 A2 ZPIP17277 53.2 2.0 0 1 CIRCULAR RCP 112.5 38.2 None 3.5 0 1 RCP 91.4 None $ 33,587 55 PIPE11163 A2 ZPIP17278 53.2 3.0 0 1 CIRCULAR RCP 113.5 38.3 None 4.0 0 1 RCP 95.5 None $ 37,105 45 CULV10063 A2 ZCUL009A 110.4 4.1 2.75 1 RECT_CLOSED RCP 125.7 125.6 Both Upstream and Downstream 4.1 2.75 2 RCP 257.9 None $ 79,823 65 CULV10069 A2 ZCUL010A 30.7 2.0 0 1 CIRCULAR RCP 98.7 60.8 Both Upstream and Downstream 3.0 0 1 RCP 93.4 Both Upstream and Downstream $ 50,829 65 CULV10070 A2 ZCUL010C 42.9 1.5 0 2 CIRCULAR ACP 137.2 82.7 Upstream 3.0 0 2 ACP 130.1 Upstream $ 19,218 65 CULV10079 A2 ZCUL009B 110.4 4.1 2.75 1 RECT_CLOSED RCP 125.8 125.6 Upstream 4.1 2.75 2 RCP 252.1 None $ 55,057 50 CULV10080 A2 ZCUL009C 110.4 4.1 2.75 1 RECT_CLOSED RCP 125.8 125.6 Both Upstream and Downstream 2.8 4.083 2 RCP 261.2 None $ 57,496 50 CULV10083 A2 ZCUL003B 573.8 4.0 8 1 RECT_CLOSED RCP 908.3 941.9 Both Upstream and Downstream 4.0 8 2 RCP 690.3 Downstream $ 28,144 65 CULV10084 A2 ZCUL003C 554.7 4.0 8 1 RECT_CLOSED RCP 866.9 894.2 Both Upstream and Downstream 4.0 8 2 RCP 673.2 Upstream $ 24,475 65 PIPE11236 A2 ZPIP15549 215.8 4.0 0 1 CIRCULAR RCP 760.4 306.0 Both Upstream and Downstream 4.0 0 2 RCP 541.6 None $ 921,603 60 PIPE11237 A2 ZPIP11710 200.3 4.0 0 1 CIRCULAR RCP 698.1 272.9 Both Upstream and Downstream 4.0 0 2 RCP 508.4 None $ 661,562 70 Recommended Facilities Summary Table
Conveyance Info Dimensions 100-year
Existing Condition
Dimensions
Recommended Condition
100-year

APPENDIX E
RECOMMENDED FACILITIES : SUMMARY TABLE
City of San Marcos Drainage Master Plan 2 of 4 April 2019 Facility ID SubWatershed Original
FacilityID
Contributing
Area (acres)
D' or H'
(diameter)/(
height)
B'
(width) Barrels Shape Material Q100 (cfs)
Qcon
(cfs) Surcharging
D' or H'
(diameter)/(
height)
(Rec)
B'
(width)
(Rec)
Barrels
(Rec)
Material
(Rec) Qcon (cfs) Surcharging(Rec) TotalCost PriorityRating Conveyance Info Dimensions 100-year
Existing Condition
Dimensions
Recommended Condition
100-year
PIPE11238 A2 ZPIP11711 13.8 2.3 0 1 CIRCULAR RCP 58.8 35.3 Both Upstream and Downstream 3.0 0 1 RCP 73.0 None $ 49,832 45 PIPE11239 A2 ZPIP11712 13.8 2.3 0 1 CIRCULAR RCP 60.7 33.7 Both Upstream and Downstream 3.0 0 1 RCP 95.6 None $ 14,145 60 PIPE11242 A2 ZPIP15552 192.3 4.0 0 1 CIRCULAR RCP 676.3 258.4 Both Upstream and Downstream 4.0 0 2 RCP 486.2 None $ 455,056 70 PIPE11243 A2 ZPIP15553 196.6 4.0 0 1 CIRCULAR RCP 694.5 264.3 Both Upstream and Downstream 4.0 0 2 RCP 516.3 None $ 292,746 70 CULV10085 A2 ZCUL12445 238.6 4.0 6 1 RECT_CLOSED RCP 779.6 447.4 None 4.0 6 2 RCP 600.8 None $ 259,739 45 PIPE11244 A2 ZPIP15554 221.9 4.5 0 1 CIRCULAR RCP 737.4 353.8 Both Upstream and Downstream 5.0 0 2 RCP 547.6 None $ 481,354 60 PIPE11245 A2 ZPIP15555 7.2 1.5 0 1 CIRCULAR RCP 28.6 39.8 Both Upstream and Downstream 2.0 0 1 RCP 28.7 None $ 12,683 60 PIPE11246 A2 ZPIP11713 231.3 4.5 0 1 CIRCULAR RCP 761.2 431.5 Upstream 5.0 0 2 RCP 577.2 None $ 313,914 60 CULV10086 A2 ZCUL13185 233.2 4.0 6 1 RECT_CLOSED RCP 765.8 436.0 None 4.0 6 2 RCP 584.5 None $ 195,129 60 PIPE11268 A2 ZPIP15784 41.4 3.5 0 1 CIRCULAR RCP 151.0 125.2 Upstream 4.0 0 1 RCP 153.2 Upstream $ 121,435 50 PIPE11269 A2 ZPIP15785 44.8 3.5 0 1 CIRCULAR RCP 162.4 136.0 None 4.0 0 1 RCP 164.4 None $ 56,834 50 PIPE11289 A2 ZPIP17625 161.1 4.0 0 1 CIRCULAR RCP 583.0 222.7 Both Upstream and Downstream 4.0 0 2 RCP 431.7 Upstream $ 533,949 60 PIPE11290 A2 ZPIP17626 161.1 4.0 0 1 CIRCULAR RCP 582.7 225.1 Both Upstream and Downstream 4.0 0 2 RCP 413.6 None $ 514,058 60 CULV10096 A2 ZPIP11996 38.6 1.5 0 2 CIRCULAR CMP 93.4 34.0 Both Upstream and Downstream 2.0 0 2 RCP 62.3 Both Upstream and Downstream $ 147,437 75 CULV10107 A2 39.6 1.8 0 1 CIRCULAR CMP 92.6 22.0 Both Upstream and Downstream 2.0 0 2 RCP 38.1 Both Upstream and Downstream $ 99,456 45 PIPE11402 A2 ZPIP15411 3.3 1.5 0 1 CIRCULAR RCP 11.4 17.0 Both Upstream and Downstream 2.0 0 1 RCP 29.7 Both Upstream and Downstream $ 11,544 60 PIPE11403 A2 ZPIP11886 14.0 1.5 0 1 CIRCULAR RCP 40.2 24.5 Both Upstream and Downstream 2.5 0 1 RCP 47.5 Both Upstream and Downstream $ 98,606 45 PIPE11410 A2 ZPIP14144 34.6 2.5 0 1 CIRCULAR RCP 104.0 61.0 Both Upstream and Downstream 3.0 0 1 RCP 80.4 Both Upstream and Downstream $ 128,285 75 PIPE11411 A2 ZPIP15224 36.3 2.5 0 1 CIRCULAR RCP 110.1 77.6 Both Upstream and Downstream 3.0 0 1 RCP 107.6 Both Upstream and Downstream $ 21,425 75 PIPE11412 A2 ZPIP14145 36.7 2.5 0 1 CIRCULAR RCP 111.5 71.4 Both Upstream and Downstream 3.0 0 1 RCP 80.0 Both Upstream and Downstream $ 103,391 75 PIPE11424 A2 ZPIP17668 19.5 2.0 0 1 CIRCULAR RCP 67.4 44.7 Both Upstream and Downstream 2.5 0 1 RCP 59.2 Downstream $ 77,609 60 PIPE11426 A2 ZPIP11089 19.5 2.0 0 1 CIRCULAR RCP 67.7 44.7 Both Upstream and Downstream 2.5 0 1 RCP 66.8 Both Upstream and Downstream $ 22,193 60 PIPE11429 A2 ZPIP14157 23.2 2.0 0 1 CIRCULAR RCP 78.0 53.5 Both Upstream and Downstream 2.5 0 1 RCP 77.5 Both Upstream and Downstream $ 22,902 70 CULV10114 A2 CUL032 32.0 2.0 0 1 CIRCULAR RCP 83.2 86.6 Upstream 3.0 0 1 RCP 88.7 Upstream $ 50,057 60 PIPE11463 A2 ZPIP10968 59.6 2.0 0 1 CIRCULAR RCP 122.3 121.9 Both Upstream and Downstream 4.0 0 1 RCP 122.1 Upstream $ 15,725 80 PIPE11464 A2 ZPIP11362 59.6 2.0 0 1 CIRCULAR RCP 122.1 121.6 Both Upstream and Downstream 4.0 0 1 RCP 122.1 None $ 27,887 85 CULV10136 A2 107.4 3.0 0 1 CIRCULAR RCP 176.0 100.6 Upstream 3.0 0 3 RCP 237.9 Upstream $ 1,180,032 80 PIPE11498 A2 ZPIP17276 12.1 1.5 0 1 CIRCULAR CMP 38.1 36.4 Upstream 2.0 0 1 RCP 37.8 Upstream $ 15,680 45 PIPE11653 A3 ZPIP16772 1.9 1.1 0 1 CIRCULAR CMP 7.4 3.6 Both Upstream and Downstream 1.5 0 1 RCP 7.7 Both Upstream and Downstream $ 53,973 75 PIPE11654 A3 ZPIP16773 5.4 1.1 0 1 CIRCULAR CMP 20.8 9.6 Upstream 1.5 0 1 RCP 18.4 Upstream $ 144,760 60 PIPE11655 A3 ZPIP16774 5.4 1.1 0 1 CIRCULAR CMP 20.8 9.6 None 1.5 0 1 RCP 18.4 None $ 30,464 50 PIPE11780 A3 ZPIP13222 20.5 1.5 0 1 CIRCULAR RCP 84.7 56.1 Upstream 2.0 0 1 RCP 84.7 None $ 23,864 60 CULV10139 A3 ZCUL072A 84.5 2.0 0 3 CIRCULAR RCP 124.6 201.7 Both Upstream and Downstream 3.0 0 3 RCP 219.8 Both Upstream and Downstream $ 304,438 75 CULV10146 A3 CUL051A 205.9 4.0 0 1 CIRCULAR RCP 232.2 172.0 Upstream 5.0 0 1 RCP 246.7 Upstream $ 99,164 65 PIPE11953 A3 ZPIP11498 20.8 2.5 0 1 CIRCULAR CMP 77.7 53.3 Upstream 3.0 0 2 RCP 80.5 None $ 423,763 70 PIPE11995 A3 ZPIP17423 7.5 1.5 0 1 CIRCULAR PVC 30.9 20.1 Upstream 3.0 0 1 PVC 35.9 None $ 188,709 45 PIPE12133 A3 ZPIP16083 7.8 1.0 0 1 CIRCULAR CMP 43.8 15.9 Both Upstream and Downstream 2.0 0 1 RCP 26.4 None $ 90,653 70 PIPE12162 A3 ZPIP17911 67.0 1.5 0 1 CIRCULAR RCP 120.9 37.5 Upstream 3.0 0 1 RCP 133.9 None $ 12,543 70 PIPE12176 A3 ZPIP20005 84.5 3.0 0 1 CIRCULAR RCP 124.4 169.7 Both Upstream and Downstream 3.5 0 1 RCP 208.3 Both Upstream and Downstream $ 43,430 45 PIPE12180 A3 ZPIP20018 136.9 4.0 0 2 CIRCULAR RCP 261.9 623.4 Upstream 4.0 0 3 RCP 557.4 None $ 276,394 55 PIPE12246 A3 86.0 3.0 0 1 CIRCULAR RCP 126.8 117.6 Both Upstream and Downstream 3.5 0 1 RCP 203.0 Both Upstream and Downstream $ 129,968 45 PIPE12247 A3 86.6 3.0 0 1 CIRCULAR RCP 127.1 78.0 Both Upstream and Downstream 3.5 0 1 RCP 203.0 Upstream $ 105,303 45 PIPE12264 A3 ZPIP10918 54.6 2.5 0 1 CIRCULAR RCP 207.3 63.0 Both Upstream and Downstream 3.0 0 2 RCP 138.5 Upstream $ 330,266 45 PIPE12267 A3 ZPIP17099 48.0 2.5 0 1 CIRCULAR RCP 180.8 55.9 Both Upstream and Downstream 3.0 0 2 RCP 120.3 Both Upstream and Downstream $ 512,714 45 PIPE12268 A3 ZPIP17100 49.8 2.5 0 1 CIRCULAR RCP 188.9 57.8 Both Upstream and Downstream 3.0 0 2 RCP 124.9 Both Upstream and Downstream $ 170,554 45 PIPE12269 A3 ZPIP17101 53.3 2.5 0 1 CIRCULAR RCP 201.6 61.6 Both Upstream and Downstream 3.0 0 2 RCP 133.9 Both Upstream and Downstream $ 425,622 45 PIPE12279 A3 ZPIP17298 47.4 2.5 0 1 CIRCULAR Unknown 177.9 55.1 Both Upstream and Downstream 3.5 0 1 RCP 128.4 Both Upstream and Downstream $ 16,419 60 PIPE12301 A3 ZPIP10919 55.6 2.5 0 1 CIRCULAR RCP 211.7 64.2 Both Upstream and Downstream 3.0 0 2 RCP 140.7 None $ 354,726 45 PIPE12302 A3 ZPIP10920 63.3 2.5 0 1 CIRCULAR RCP 239.3 77.0 Upstream 3.0 0 2 RCP 161.4 None $ 308,896 45 PIPE12379 A4 ZPIP12518 65.6 2.0 0 1 CIRCULAR RCP 222.4 171.8 Upstream 3.0 0 1 RCP 221.6 None $ 16,049 45 PIPE12408 A4 ZPIP12554 184.1 3.0 0 1 CIRCULAR RCP 548.3 288.5 Upstream 4.0 0 1 RCP 440.6 Upstream $ 77,928 45 PIPE12771 A4 ZPIP16927 20.2 2.3 0 1 CIRCULAR ACP 73.9 63.4 Both Upstream and Downstream 3.0 0 1 ACP 74.0 None $ 19,077 50 PIPE12780 A4 ZPIP10580 26.7 2.0 0 1 CIRCULAR ACP 99.1 77.4 Upstream 3.0 0 1 ACP 99.6 None $ 94,520 75 CULV10183 A4 ZCUL038A 163.2 5.0 0 1 CIRCULAR CMP 585.2 486.3 Upstream 5.5 0 2 RCP 531.4 None $ 235,868 90 PIPE12838 A4 ZPIP13613 15.4 1.5 0 1 CIRCULAR RCP 56.4 28.4 Upstream 2.5 0 1 RCP 57.0 None $ 112,463 50

APPENDIX E
RECOMMENDED FACILITIES : SUMMARY TABLE
City of San Marcos Drainage Master Plan 3 of 4 April 2019 Facility ID SubWatershed Original
FacilityID
Contributing
Area (acres)
D' or H'
(diameter)/(
height)
B'
(width) Barrels Shape Material Q100 (cfs)
Qcon
(cfs) Surcharging
D' or H'
(diameter)/(
height)
(Rec)
B'
(width)
(Rec)
Barrels
(Rec)
Material
(Rec) Qcon (cfs) Surcharging(Rec) TotalCost PriorityRating Conveyance Info Dimensions 100-year
Existing Condition
Dimensions
Recommended Condition
100-year
PIPE12839 A4 ZPIP16991 16.0 1.8 0 1 CIRCULAR RCP 59.0 32.3 None 2.5 0 1 RCP 59.3 None $ 51,815 50 PIPE12840 A4 ZPIP16992 16.7 1.8 0 1 CIRCULAR RCP 61.3 29.6 None 2.5 0 1 RCP 61.0 None $ 125,704 50 PIPE12866 A4 ZPIP13791 44.9 1.5 0 1 CIRCULAR RCP 109.5 85.1 Both Upstream and Downstream 3.0 0 1 RCP 109.5 None $ 44,426 70 PIPE12883 A4 ZPIP13819 28.9 1.5 0 1 CIRCULAR CMP 67.9 65.7 Upstream 2.0 0 1 RCP 87.9 Upstream $ 46,637 85 PIPE12888 A4 ZPIP13826 20.4 1.5 0 1 CIRCULAR CMP 0.1 45.8 Both Upstream and Downstream 2.0 0 1 RCP 58.2 Both Upstream and Downstream $ 11,200 85 PIPE12910 A4 ZPIP13874 16.8 1.5 0 1 CIRCULAR CMP 61.3 25.0 Upstream 2.0 0 1 RCP 46.4 None $ 117,992 75 PIPE12911 A4 ZPIP13875 16.8 2.0 0 1 CIRCULAR CMP 61.2 26.2 Both Upstream and Downstream 2.0 0 1 RCP 46.5 None $ 126,202 60 PIPE12912 A4 ZPIP17051 16.8 2.0 0 1 CIRCULAR CMP 61.2 29.6 Both Upstream and Downstream 2.0 0 1 RCP 46.5 Upstream $ 144,491 75 PIPE12913 A4 ZPIP17052 9.8 2.0 0 1 CIRCULAR CMP 36.2 16.1 Both Upstream and Downstream 2.0 0 1 RCP 33.6 Both Upstream and Downstream $ 101,819 85 PIPE12940 A4 ZPIP17139 29.3 2.3 0 1 CIRCULAR RCP 96.1 57.0 Both Upstream and Downstream 3.0 0 1 RCP 94.0 None $ 156,662 65 PIPE12941 A4 ZPIP11049 38.9 2.3 0 1 CIRCULAR RCP 132.9 67.4 Upstream 3.0 0 1 RCP 105.3 Both Upstream and Downstream $ 171,386 65 PIPE12942 A4 ZPIP11050 33.1 2.3 0 1 CIRCULAR RCP 111.0 60.4 Both Upstream and Downstream 3.0 0 1 RCP 100.4 Downstream $ 117,299 65 PIPE12954 A4 ZPIP14453 44.9 1.5 0 1 CIRCULAR RCP 109.5 80.8 Upstream 3.0 0 1 RCP 109.5 None $ 58,852 45 CULV10187 A4 CUL040 1040.5 6.0 0 1 CIRCULAR RCP 2991.3 515.7 Both Upstream and Downstream 6.0 0 3 RCP 1419.3 None $ 328,868 60 CULV10213 A4 ZCUL038C 163.2 5.0 0 1 CIRCULAR CMP 585.5 487.8 Both Upstream and Downstream 5.5 0 2 RCP 531.0 None $ 102,061 90 CULV10214 A4 ZCUL038D 160.3 5.0 0 1 CIRCULAR CMP 577.8 482.8 Both Upstream and Downstream 5.5 0 2 RCP 522.6 None $ 18,323 90 PIPE13101 A4 ZPIP15236 38.9 2.3 0 1 CIRCULAR RCP 133.3 67.6 Both Upstream and Downstream 3.0 0 1 RCP 117.8 Both Upstream and Downstream $ 12,998 65 PIPE13147 A4 ZPIP11595 20.9 2.0 0 1 CIRCULAR RCP 77.2 63.9 Upstream 3.0 0 1 RCP 75.2 None $ 41,780 50 PIPE13148 A4 ZPIP11596 8.5 2.0 0 1 CIRCULAR RCP 32.1 26.1 Both Upstream and Downstream 3.0 0 1 RCP 30.9 None $ 5,034 65 CULV10215 A4 CUL086A 36.3 3.0 0 1 CIRCULAR RCP 131.0 110.1 Both Upstream and Downstream 3.5 0 1 RCP 132.6 None $ 96,983 75 CULV10216 A4 CUL086B 36.3 2.0 0 1 CIRCULAR RCP 131.0 111.5 Both Upstream and Downstream 3.5 0 1 RCP 133.1 Upstream $ 21,555 50 CULV10217 A4 CUL086C 44.9 3.0 0 1 CIRCULAR RCP 161.8 135.6 Upstream 3.5 0 1 RCP 161.8 None $ 19,945 50 PIPE13231 A4 ZPIP15644 17.0 2.5 0 1 CIRCULAR RCP 53.3 76.6 Both Upstream and Downstream 3.0 0 1 RCP 87.1 Both Upstream and Downstream $ 15,590 60 PIPE13235 A4 ZPIP11755 15.6 2.5 0 1 CIRCULAR RCP 48.0 59.9 Both Upstream and Downstream 3.0 0 1 RCP 70.6 Both Upstream and Downstream $ 17,308 45 CULV10219 A4 ZCUL15980A 1272.3 8.0 3 3 RECT_CLOSED Earthen 674.4 539.5 Upstream 3.0 8 4 RCP 1222.6 Both Upstream and Downstream $ 341,197 65 CULV10220 A4 CUL042A 1305.3 3.0 2 3 RECT_CLOSED RCP 624.5 541.5 Both Upstream and Downstream 3.0 2 3 RCP 847.7 Both Upstream and Downstream $ 129,567 60 CULV10221 A4 CUL042C 1305.3 3.0 2 3 RECT_CLOSED RCP 624.5 541.5 Both Upstream and Downstream 3.0 2 3 RCP 847.7 Both Upstream and Downstream $ 34,733 60 PIPE13442 A4 ZPIP16557 255.6 3.5 0 1 CIRCULAR RCP 541.7 487.0 Upstream 3.5 0 2 RCP 561.0 Upstream $ 138,006 70 PIPE13478 A4 PIP20021B 0.8 1.5 0 1 CIRCULAR RCP 3.6 13.5 Both Upstream and Downstream 2.0 0 1 RCP 14.0 Both Upstream and Downstream $ 10,715 60 CULV10239 A4 646.2 4.0 0 1 CIRCULAR RCP 1749.2 557.6 Both Upstream and Downstream 4.0 0 3 RCP 1066.3 None $ 567,432 45 CULV10240 A4 826.0 5.5 0 1 CIRCULAR CMP 962.0 470.6 Upstream 5.5 0 5 RCP 1707.7 Upstream $ 349,395 55 CULV10242 A4 CUL042B 1310.4 3.0 2 3 RECT_CLOSED RCP 625.4 542.2 Both Upstream and Downstream 3.0 2 3 RCP 849.6 Both Upstream and Downstream $ 40,337 60 PIPE13576 A4 ZPIP16576 15.4 1.5 0 1 CIRCULAR RCP 56.9 35.4 Both Upstream and Downstream 2.5 0 1 RCP 57.6 None $ 22,569 60 PIPE13577 A4 ZPIP17871 14.7 1.5 0 1 CIRCULAR RCP 54.4 43.8 Both Upstream and Downstream 2.5 0 1 RCP 54.8 None $ 26,060 70 PIPE13578 A4 ZPIP17872 14.7 1.5 0 1 CIRCULAR RCP 54.3 37.9 Both Upstream and Downstream 2.5 0 1 RCP 54.8 None $ 4,838 60 PIPE13588 A4 33.9 3.0 0 1 CIRCULAR RCP 82.5 55.2 Both Upstream and Downstream 3.5 0 1 RCP 97.7 Both Upstream and Downstream $ 130,556 45 PIPE13589 A4 37.6 3.0 0 1 CIRCULAR RCP 91.2 60.9 Both Upstream and Downstream 3.5 0 1 RCP 111.9 Both Upstream and Downstream $ 27,930 45 PIPE13590 A4 40.9 3.0 0 1 CIRCULAR RCP 97.6 66.3 Both Upstream and Downstream 4.0 0 1 RCP 125.4 Upstream $ 96,296 45 PIPE13591 A4 41.5 3.0 0 1 CIRCULAR RCP 92.5 69.9 Both Upstream and Downstream 4.0 0 1 RCP 134.3 None $ 85,617 60 PIPE13592 A4 41.5 3.0 0 1 CIRCULAR RCP 90.8 74.5 Both Upstream and Downstream 4.0 0 1 RCP 126.1 None $ 173,601 45 PIPE13596 A4 250.7 3.5 0 1 CIRCULAR RCP 533.2 478.3 Both Upstream and Downstream 3.5 0 2 RCP 511.8 Both Upstream and Downstream $ 200,301 70 CULV10243 A4 ZPIP16685 687.0 6.0 6 3 RECT_CLOSED RCP 1377.1 1266.7 Upstream 6.0 6 6 RCP 1496.0 Upstream $ 2,476,312 75 PIPE13616 A4 ZPIP14289 85.4 4.5 0 1 CIRCULAR RCP 181.6 171.4 None 4.5 0 2 RCP 246.6 None $ 1,629,466 55 PIPE13695 B ZPIP10040 150.9 3.5 0 1 CIRCULAR RCP 340.4 311.5 None 3.5 0 2 RCP 332.5 None $ 79,363 70 CULV10244 B ZCUL044A 737.2 10.0 5 2 RECT_CLOSED RCP 1660.3 1430.5 Downstream 5.0 10 4 RCP 1889.1 None $ 980,592 70 PIPE13860 B ZPIP10189 88.5 1.5 0 1 CIRCULAR RCP 145.0 146.6 Upstream 3.0 0 1 RCP 145.0 None $ 9,227 70 CULV10245 B ZCUL11000A 994.5 10.0 5 2 RECT_CLOSED RCP 1715.6 1793.3 Downstream 5.0 10 3 RCP 1960.4 None $ 4,061,679 45 CULV10246 B ZCUL11000C 1003.9 10.0 5 2 RECT_CLOSED Unknown 1811.0 1667.8 Upstream 10.0 5 3 RCP 1971.3 None $ 1,539,385 45 PIPE13922 B ZPIP11030 9.4 3.0 0 1 CIRCULAR RCP 260.5 74.2 Both Upstream and Downstream 4.0 0 1 RCP 14.6 None $ 3,995 45 PIPE13923 B ZPIP14271 9.4 3.0 0 1 CIRCULAR RCP 260.6 44.9 Both Upstream and Downstream 4.0 0 1 RCP 13.6 None $ 168,969 45 CULV10247 B ZCUL044C 586.4 10.0 5 2 RECT_CLOSED RCP 1425.3 1216.1 Upstream 5.0 10 3 RCP 1648.3 Upstream $ 274,945 70 CULV10248 B ZCUL11000E 993.4 10.0 5 2 RECT_CLOSED RCP 1715.9 1795.8 Upstream 5.0 10 3 RCP 1959.8 Upstream $ 374,921 45 CULV10249 C ZCUL060 184.4 4.5 0 1 CIRCULAR RCP 409.2 292.4 Upstream 4.5 0 3 RCP 518.3 Upstream $ 305,579 60 PIPE14473 C ZPIP11091 28.2 1.5 0 1 CIRCULAR RCP 89.8 45.6 Both Upstream and Downstream 3.0 0 1 RCP 98.2 None $ 56,220 60 PIPE14474 C ZPIP18034 0.0 1.5 0 1 CIRCULAR RCP 0.0 24.5 Both Upstream and Downstream 3.0 0 1 RCP 0.0 None $ 17,068 45

APPENDIX E
RECOMMENDED FACILITIES : SUMMARY TABLE
City of San Marcos Drainage Master Plan 4 of 4 April 2019 Facility ID SubWatershed Original
FacilityID
Contributing
Area (acres)
D' or H'
(diameter)/(
height)
B'
(width) Barrels Shape Material Q100 (cfs)
Qcon
(cfs) Surcharging
D' or H'
(diameter)/(
height)
(Rec)
B'
(width)
(Rec)
Barrels
(Rec)
Material
(Rec) Qcon (cfs) Surcharging(Rec) TotalCost PriorityRating Conveyance Info Dimensions 100-year
Existing Condition
Dimensions
Recommended Condition
100-year
CULV10252 C CUL061A 48.0 3.0 0 1 CIRCULAR RCP 103.6 109.4 Both Upstream and Downstream 3.0 0 2 RCP 119.3 Both Upstream and Downstream $ 123,337 45 CULV10254 C ZCUL16822 216.5 4.5 0 1 CIRCULAR RCP 454.6 332.2 None 4.5 0 3 RCP 599.2 None $ 378,769 85 PIPE14691 C PIP19103 16.4 1.5 0 1 CIRCULAR RCP 51.0 42.1 Upstream 3.0 0 1 RCP 50.8 None $ 27,882 45 PIPE14692 C PIP19104 16.4 1.5 0 1 CIRCULAR RCP 51.0 45.5 Both Upstream and Downstream 3.0 0 1 RCP 50.8 None $ 3,709 45 PIPE14704 C ZPIP12768 28.1 2.0 0 1 CIRCULAR CMP 82.3 72.7 Both Upstream and Downstream 2.0 0 1 RCP 74.9 Both Upstream and Downstream $ 47,723 70 PIPE14751 C ZPIP11075 51.5 1.5 0 1 CIRCULAR RCP 157.8 75.0 Upstream 3.5 0 1 RCP 178.6 None $ 93,547 45 CULV10256 C ZCUL16823 218.5 4.5 0 1 CIRCULAR RCP 457.0 334.4 None 4.5 0 3 RCP 606.2 None $ 288,263 60 CULV10257 C CUL057 293.5 5.0 6.333 1 RECT_CLOSED RCP 522.1 514.6 Upstream 5.0 6.333 2 RCP 631.1 Upstream $ 169,893 60 Appendix F
CIP Project Exhibits
CIP_West
Mission
Road
CIP_West
Mission Road
CIP_Discovery
Street
CIP_Bingham
Drive CIP_Los
Vallecitos
Boulevard
CIP_North Twin
Oaks Valley Road
CIP_West
Mission Road
CIP_East
Mission Road
CIP_South
Rancho
Santa Fe Road
CIP_Las
Flores
Drive
CIP_Mulberry
Drive
CIP_South
Santa
Fe Avenue

CARLSBAD CARLSBAD

ENCINITAS ENCINITAS

SAN MARCOS SAN MARCOS

VISTA VISTA
County of County of
San Diego San Diego
OCEANSIDE OCEANSIDE S.D. COUNTY S.D. COUNTY

ESCONDIDO ESCONDIDO

SAN DIEGO SAN DIEGO
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_Index_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
Recommended Facilities CIP Projects - 11x17 Index
Legend
CIP Projects
Major River / Stream
Sub-Catchements
April, 2019
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 6,000 12,000
Scale in Feet
North

FIREBIRD LN

ALLEY ALLEY

RRIICCHHMMAARR AAVV

PPIICCOOAAVV
NN

TTWWII NN

OOAAKKSS

VVAA LLLLEEYY
RRDD

PICO AV

E MISSION RD E MISSION RD

W MISSION RD W MISSION RD

WWOOOODDWWAARRDD SSTT

POSITIVE PL

POSITIVE PL

PLEASANT WY

GOSNELL WY GOSNELL WY

WW SSAANN MMAARRCCOOSS BBLL

ROMA AV ROMA AV

ALLEY ALLEY

AUTUMN DR AUTUMN DR

EESSAANNMMAARRCCOOSS BBLL
PIPE10613
PIPE10534 PIPE10533
PIPE10314
PIPE10316
PIPE10540
PIPE10539
600'
600'
590'
590'
590' 590'
600' 600'
600' 600'
590' 590'
580'
580'
590' 590'
580' 580'
590' 590'
580'
580'
580'
580'
570' 570'
580'
580' 580'
580' 580'
590'
590'
590' 590'
580' 580'
580'
580'
580' 580'
580' 580'
580'
580'
580'
580'
580'
580'
580'
580'
580' 580'
580' 580'
580' 580'
580'
580'
580'
580'

SAN MARCOS SAN MARCOS
CLEN10103
CBIN10158
CBIN10159
OTHR10071
CBIN10254
CLEN10156
OTHR10077
INLT10111
CBOL10001
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 1 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 140 280
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_West Mission Road (West Mission Road and Firebird Lane)

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE10316 CIRCULAR 20.3 3.89 340.4 579.29 576.79 2 4 0 0 1 1 RCP RCP 54.0 124.8 2.8 1.0 PIPE10315 CIRCULAR 20.3 3.87 15.7 576.79 576.51 2 4 0 0 1 1 RCP RCP 61.1 124.8 2.0 0.6 PIPE10314 CIRCULAR 21.2 3.89 94.3 576.51 574.78 2 4 0 0 1 1 RCP RCP 62.6 128.8 2.1 0.7 PIPE10539 CIRCULAR 65.8 3.56 425.4 571.21 569.51 4 5.5 0 0 1 1 RCP RCP 158.2 224.9 1.8 1.1 PIPE10613 CIRCULAR 70.3 3.57 41.5 569.51 569.33 4 6 0 0 1 1 RCP RCP 171.7 240.7 2.1 0.9 PIPE10540 CIRCULAR 75.0 3.48 384.5 569.33 567.35 4 6 0 0 1 1 RCP RCP 176.9 253.5 1.9 0.8 PIPE10534 CIRCULAR 76.3 3.46 55.5 567.35 566.95 4 6 0 0 1 1 RCP RCP 181.2 257.0 2.5 0.7 PIPE10533 CIRCULAR 77.6 3.46 60.1 566.95 565.77 4 6 0 0 1 1 RCP RCP 184.1 261.2 0.9 0.4

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - North Basin
Project ID No.:

CIP_West Mission Road
(West Mission Road and
Firebird Lane)
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 3.0% 1.5 - 3% of subtotal $855,550.00 $25,666.50 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 1420 LF $20.00 $28,400.00
Connect Existing Facility 1 EA $1,500.00 $1,500.00
Cleanout (Type A) 4 EA $5,000.00 $20,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 5 EA $5,500.00 $27,500.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 450 LF $325.00 $146,250.00 54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 970 LF $600.00 $582,000.00 Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 1400 LF $2.00 $2,800.00
Paving, AC 18600 SF $1.50 $27,900.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $881,216.50
20% Contingency: $176,243.30
30% Design/Indirect: $264,364.95
Total: $1,321,824.75

HHEENNSSOONNHHEEIIGGHHTTSS DDRR

PRIVATE RD

KNOLL RD

KKIIRRKKWWAALLLL
DDRR

PRIVATE RD

RICHMAR AV RICHMAR AV

MARCOS ST

LOS VALLECITOS BL LOS VALLECITOS BL

AUTUMN DR AUTUMN DR

LIBERTY DR

DDUUNNDDEEEELLNN

WW MMIISSSSIIOONN RRDD

PRIVATE RD PRIVATE RD

WESTLAKE DR

PRIVATE RD PRIVATE RD

LOS OLIVOS DR

ABERDEEN AV

PRIVATE RD

HELMSDALE RD HELMSDALE RD
CULV10141
PIPE12059
PIPE12244
PIPE12018
PIPE12022
PIPE12021
PIPE11783
PIPE12249
PIPE12017
790'
790'
780'
780'
770' 770'
760' 760'
750'
750'
740'
740'
730' 730'
720'
720'
700'
700'
670' 670'
660' 660'
650' 650'
640'
640'
630'
630'
620'
620'
610' 610'
600'
600'
810' 810'
800'
800'
710' 710'
680'
680'
730' 730'
720'
720'
710'
710'
700'
700'
690'
690'
680'
680'
670' 670'
660' 660'
650'
650'
640'
640'
630' 630'
620' 620'
610' 610'
600'
600'
590'
590'
740' 740'
730'
730'
720'
720'
710' 710'
700' 700'
690' 690'
680' 680'
660' 660'
650' 650'
640' 640'
630' 630' 620' 620'
610' 610'
600' 600'
670' 670'
580' 580'
730' 730'
720' 720'
710' 710'
700' 700'
690' 690'
680'
680'
670'
670'
660' 660'
650'
650'
640'
640'
630' 630'
620' 620'
610' 610'
730'
720'
720'
710'
710'
700'
700'
690'
690'
680' 680'
670'
670'
660'
660'
650' 650'
640' 640'
730'
730'
720'
720'
710'
710'
700'
700'
690'
690'
680' 680'
670'
670'
660'
660'
650' 650'
640' 640'
650'
650'
640'
640'
630' 630'
680' 680'
670'
670'
690' 690'
670' 670'
660'
660'
620' 620'
610' 610'
600' 600'
590'
590'
680'
680'
670'
670'
660'
620'
620'
600' 600'
610' 610'
590' 590'
610' 610'
600' 600'
790' 790'
780'
780'
590'
590'
580'
580'
670'
670'
660'
660'
670' 670'
660' 660'
590' 590'
580' 580'
580' 580'
570' 570'
590' 590'
570' 570'
600'
600'
590'
590'
670'
670'
580' 580'
570'
570'
790' 790'
750' 750'
740'
740'
680'
680'
640' 640'
620'
620' 620'
620'
620'
620'
620'
620'
620'
620'
620'
590'
590'
570'
570'
570' 570'
570' 570'

SAN MARCOS SAN MARCOS
CLEN10510
CLEN10511
CBIN10821
OTHR10642
CLEN10560
CBIN10934
CLEN10561
CBIN10936
OTLT10107
CLEN10532
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 2 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 230 460
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_West Mission Road (West Mission Road and Liberty Drive)

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE12022 CIRCULAR 30.1 3.65 159.6 582.90 580.84 3 4 0 0 1 1 RCP RCP 91.2 1105.0 1.3 0.7 PIPE12021 CIRCULAR 30.1 3.67 175.2 580.84 578.58 3 4 0 0 1 1 RCP RCP 79.4 110.7 1.1 0.7 PIPE12018 CIRCULAR 33.9 3.70 156.3 578.58 576.55 3.5 4.5 0 0 1 1 RCP RCP 84.1 125.4 1.2 0.6 PIPE12017 CIRCULAR 36.5 3.71 751.4 576.55 572.96 3.5 4.5 0 0 1 1 RCP RCP 78.8 135.4 1.2 1.0 PIPE12244 CIRCULAR 59.1 3.57 153.9 572.96 572.46 3.5 4.5 0 0 1 2 RCP RCP 128.0 211.3 1.5 0.9 PIPE12059 CIRCULAR 61.6 3.58 102.8 572.46 571.87 3.5 4.5 0 0 1 2 RCP RCP 158.1 220.6 2.1 0.7 PIPE11783 CIRCULAR 61.6 3.59 290.8 571.87 570.19 3.5 4.5 0 0 1 2 RCP RCP 155.7 220.6 2.0 0.7 PIPE12249 CIRCULAR 72.7 3.53 395.5 570.19 567.93 3.5 4.5 0 0 1 2 RCP RCP 154.5 256.7 2.6 0.9 CULV10141 RECT_CLOSED 107.2 3.01 101.0 567.93 567.54 3 3 7 7 1 2 RCP RCP 216.1 322.5 1.4 1.0

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.:

CIP_West Mission Road
(West Mission Road and Liberty Drive)
Storm Drain
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 3.0% 1.5 - 3% of subtotal $1,287,640.00 $38,629.20 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0.00 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 1240 LF $20.00 $24,800.00
Connect Existing Facility 4 EA $1,500.00 $6,000.00
Cleanout (Type A) 7 EA $5,000.00 $35,000.00
Wing Type Headwall / Box Culvert Wingwall 5.06 CY $1,500.00 $7,590.00 Curb Inlet, L <10' 0 EA $5,500.00 $0.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 330 LF $325.00 $107,250.00 54" Reinforced Concrete Pipe 2790 LF $375.00 $1,046,250.00 60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 6300 LF $2.00 $12,600.00
Paving, AC 19300 SF $1.50 $28,950.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $1,326,269.20
20% Contingency: $265,253.84
30% Design/Indirect: $397,880.76
Total: $1,989,403.80

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.:

CIP_West Mission Road
(West Mission Road and Liberty Drive)
Culvert
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 3.0% 1.5 - 3% of subtotal $202,627.60 $6,078.83 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 109.06 CY $1,500.00 $163,587.60 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 0 LF $20.00 $0.00
Connect Existing Facility 2 EA $1,500.00 $3,000.00
Cleanout (Type A) 0 EA $5,000.00 $0.00
Wing Type Headwall / Box Culvert Wingwall 5.06 CY $1,500.00 $7,590.00 Curb Inlet, L <10' 0 EA $5,500.00 $0.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 200 LF $2.00 $400.00
Paving, AC 900 SF $1.50 $1,350.00
Energy Dissipater (D-40) 1 LS $7,500.00 $7,500.00
Subtotal: $208,706.43
20% Contingency: $41,741.29
30% Design/Indirect: $62,611.93
Total: $313,059.64

DISCOVERY ST

DISCOVERY ST

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

GGRRAANNAADDAA
WWYY

PRIVATE RD

GGRRAANNAADDAA
WWYY

PRIVATE RD PRIVATE RD

LLAA SSOOMMBBRRAA DDRR

PRIVATE RD PRIVATE RD
PIPE12889
PIPE13329
CULV10185
PIPE13330
PIPE13468
530'
530'
520'
520'
520' 520'
510'
510'
510'
510'
530'
530'
530'
530'
530'
530'
520'
520'
520'
520'
San Marcos Creek
OTHR11745
S.D. COUNTY S.D. COUNTY

SAN MARCOS SAN MARCOS
CBIN11215
OTHR10964
CBIN11295
CLEN11050
CLEN11051
OTLT10183
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 3 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 100 200
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_ Discovery Street

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE13330 CIRCULAR 23.3 3.10 135.0 521.33 520.85 3.0 4.0 0 0 1 1 RCP RCP 44.3 72.0 1.1 0.8 PIPE13329 CIRCULAR 23.3 3.34 39.8 520.85 520.72 3.0 4.0 0 0 1 1 RCP RCP 61.9 77.7 1.4 0.9 CULV10185 CIRCULAR 23.3 3.09 59.1 520.72 520.52 3.0 3.5 0 0 2 2 CMP RCP 60.4 72.6 1.5 0.6 PIPE12889 CIRCULAR 27.8 3.02 25.8 520.52 520.43 3.5 4.0 0 0 1 2 CMP RCP 87.2 85.1 1.6 0.5 PIPE13468 CIRCULAR 27.8 3.00 706.8 520.43 518.63 3.5 4.0 0 0 1 2 CMP RCP 43.7 83.5 2.4 0.6

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - Main Basin
Project ID No.: CIP_Discovery Street
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $395,290.00 $7,905.80 Clearing and Grubbing 1 LS $10,000.00 $10,000.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 170 LF $20.00 $3,400.00
Connect Existing Facility 1 EA $1,500.00 $1,500.00
Cleanout (Type A) 3 EA $5,000.00 $15,000.00
Wing Type Headwall / Box Culvert Wingwall 4.06 CY $1,500.00 $6,090.00 Curb Inlet, L <10' 2 EA $5,500.00 $11,000.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 60 LF $280.00 $16,800.00
48" Reinforced Concrete Pipe 910 LF $325.00 $295,750.00 54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 1900 LF $2.00 $3,800.00
Paving, AC 3500 SF $1.50 $5,250.00
Energy Dissipater (D-40) 1 LS $7,500.00 $7,500.00
Subtotal: $403,195.80
20% Contingency: $80,639.16
30% Design/Indirect: $120,958.74
Total: $604,793.70

GRAND AV

GRAND AV

BINGHAM DR

W MISSION RD

W MISSION RD

LOS VALLECITOS BL LOS VALLECITOS BL

TRANSIT CENTER TRANSIT CENTER

VVAALLLLEECC IITTOO
SS

DD EE OO
RROO

NEWPORT DR

LLININDDAA

VVISISTTAA
DDRR

LOS VALLECITOS BL

ARMORLITE DR ARMORLITE DR
PIPE11807
PIPE11929
PIPE11931
PIPE11794
PIPE11928
PIPE11797
PIPE11795
PIPE11798
570'
570'
560' 560'
560' 560'
550'
550'
560' 560'
550'
550'
550' 550'
570' 570'
550' 550'
570' 570'
550' 550'
570' 570'
560' 560'
550' 550'
550' 550'
570'
570'
560'
560'
560' 560'
550' 550'
550' 550'
550' 550'
550'
550'
550' 550'
550'
550'
550'
550'
550' 550'
550'
550'
550' 550'
550'
550'
550' 550'
550' 550'

SAN MARCOS SAN MARCOS
CLEN10514
CLEN10512
CLEN10513
CBIN10825
CBIN10827
CBIN10905
CBIN10906
CBIN10907
CLEN10546
CBIN10909
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 4 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 210 420
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_Bingham Drive

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE11928 CIRCULAR 121.5 1.55 258.6 553.99 551.88 1.5 4.5 0 0 1 2 RCP RCP 71.9 216.2 9.2 1.6 PIPE11929 CIRCULAR 123.1 1.52 53.6 551.71 551.34 2 5 0 0 1 2 RCP RCP 72.4 220.1 3.9 1.7 PIPE11927 CIRCULAR 123.1 1.51 38.2 551.17 550.79 2 5 0 0 1 2 RCP RCP 72.2 221.1 3.2 1.4 PIPE11931 CIRCULAR 127.5 1.49 71.6 550.75 549.97 2 5 0 0 1 2 RCP RCP 74.8 232.8 3.2 1.4 PIPE11798 CIRCULAR 132.9 1.45 339.1 549.76 547.78 2.5 5 0 0 1 2 RCP RCP 78.2 232.7 2.5 1.9 PIPE11797 CIRCULAR 134.2 1.44 3001.0 547.72 545.94 2.5 5 0 0 1 2 RCP RCP 79.3 232.7 2.5 1.9 PIPE11795 CIRCULAR 146.6 1.39 304.2 545.88 543.63 2.5 5 0 0 1 2 RCP RCP 86.4 253.9 2.5 1.8 PIPE11794 CIRCULAR 146.6 1.39 242.0 543.59 541.79 2.5 5 0 0 1 2 RCP RCP 86.8 250.6 2.5 1.8 PIPE11807 CIRCULAR 148.6 1.39 35.5 541.61 541.29 3 5 0 0 1 2 RCP RCP 87.8 257.0 0.9 1.6

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.: CIP_Bingham Drive
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $1,572,705.00 $31,454.10 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 0 LF $20.00 $0.00
Connect Existing Facility 5 EA $1,500.00 $7,500.00
Cleanout (Type A) 3 EA $5,000.00 $15,000.00
Wing Type Headwall / Box Culvert Wingwall 6.17 CY $1,500.00 $9,255.00 Curb Inlet, L <10' 6 EA $5,500.00 $33,000.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 520 LF $375.00 $195,000.00 60" Reinforced Concrete Pipe 2770 LF $450.00 $1,246,500.00 72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 6600 LF $2.00 $13,200.00
Paving, AC 22700 SF $1.50 $34,050.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $1,604,159.10
20% Contingency: $320,831.82
30% Design/Indirect: $481,247.73
Total: $2,406,238.65

WW SSAANN

MMAARRCCOOSS BBLL
LLIINN
DDAA

VVISISTTAA
DDRR

PRIVATE RD

GRAND AV

GRAND AV

N ECHO LN

SS BBEENNTT AAVV

KNOLL RD

LLOOSSVVAALLLLEECCIITTOOSS BBLL

ARMORLITE DR ARMORLITE DR

VVAALLLLEE CCIITTOOSS
DDEE
OORROO
PIPE11994
PIPE11801
PIPE11799
CIP8_C5
CIP8_C27
CIP8_C27_1
700'
700'
690'
690'
680' 680'
670'
670'
660' 660'
650'
650'
640'
640'
630' 630'
620'
620'
610'
610'
600'
600'
590'
590'
580'
580'
570'
570'
560'
560'
600' 600'
590'
590'
580' 580'
570' 570'
560' 560'
560' 560'
550' 550'
550' 550'
560'
560'
570' 570'
560'
560'
570' 570'
570' 570'
560'
560'
560' 560'
550'
550'
550'
550'
560' 560'
560' 560'
560' 560'
550' 550'
550'
550'
550' 550'
550' 550'
550'
550'
550'
550'
550'
550'
550' 550'
550' 550'
550' 550'

SAN MARCOS SAN MARCOS
CLEN10514
INLT10371
CBIN10827
CIP8_J30
CIP8_J1
CIP8_J10
CIP8_J23
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 5 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 230 460
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_Los Vallecitos Boulevard

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
CIP8_C5 CIRCULAR 0.0 0.00 38.9 557.05 556.97 0 3 0 0 0 1 RCP 0 0.1 0 0.0 CIP8_C27_1 CIRCULAR 13.1 3.08 850.6 556.97 549.51 0 3 0 0 0 1 RCP 0 40.3 0 0.7 CIP8_C27 CIRCULAR 25.8 2.35 823.9 549.51 543.81 0 3 0 0 0 1 RCP 0 60.7 0 1.1 PIPE11801 CIRCULAR 45.2 2.91 280.4 543.81 543.53 3.25 5 0 0 2 1 RCP RCP 100.7 131.6 3.9 1.6 PIPE11799 CIRCULAR 50.7 3.07 347.8 543.53 543.20 3.5 5 0 0 2 1 RCP RCP 112.2 155.6 3.6 1.9 PIPE11994 CIRCULAR 7.5 4.28 23.0 550.30 549.51 3 3 0 0 1 1 RCP 0.0 32.3 0.0 0.3

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - Main Basin
Project ID No.: CIP_Los Vallecitos Boulevard
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $1,156,150.00 $23,123.00 Clearing and Grubbing 1 LS $10,000.00 $10,000.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 1740 LF $20.00 $34,800.00
Connect Existing Facility 2 EA $1,500.00 $3,000.00
Cleanout (Type A) 3 EA $5,000.00 $15,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 3 EA $5,500.00 $16,500.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 1740 LF $260.00 $452,400.00 42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 1260 LF $450.00 $567,000.00 72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 6000 LF $2.00 $12,000.00
Paving, AC 17500 SF $1.50 $26,250.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $1,179,273.00
20% Contingency: $235,854.60
30% Design/Indirect: $353,781.90
Total: $1,768,909.50

BBUUEENNAA

CCRREEEEKK
RRDD

PRESTWICK CT

CASSOU RD CASSOU RD

EE LLAA CCIIEENNEEGGAA RRDD

N TWIN OAKS VALLEY RD

MMEEDDII

NNAAHHRRDD

COUNTRY CREEK

VVIICC TTOORR IIAA
WWYY

EDWIN LN

MMUUIIRRFFIIEELLDDWWYY

MMEEDDIINN AA HH
RRDD

COX RD COX RD

SUNNY VISTA LN

PRIVATE RD

SSYYCCAAMMOORREECCRREEEEKKLLNN

PRIVATE RD

PRIVATE RD
CCAA
MM
DDEENN
PPLL

SYCAMORE DR

OLIVE ST

OLIVE ST
PIPE10569
PIPE10568
CIP2_C25_5
CIP2
CIP2_C25
CIP2_C26
CIP2_C25_2
CIP2_C25_4
CIP2_C15
790'
790'
780'
780'
770'
770'
760'
760'
750'
750'
740'
740'
720'
720'
710' 710'
700'
700'
750'
750'
740'
740'
730'
730'
720'
720'
690' 690'
680' 680'
670' 670'
710' 710'
700'
700'
750' 750'
740' 740'
730'
720'
720'
710'
700'
800' 800'
780' 780'
770'
770'
760'
760'
750' 750'
740'
740'
730' 730'
760'
760'
740' 740'
730'
730'
720' 720'
750' 750'
740' 740'
730' 730'
720' 720'
730'
730'
720' 720'
710' 710'
740' 740'
730' 730'
720' 720'
720'
710'
710'
710'
700'
750' 750'
740'
700' 700'
690' 690'
690' 690'
680' 680'
690'
790' 790'
750' 750'
700' 700'
720'
720'
680' 680'
670' 670'
680'
680'
670'
800' 800' 770' 770'
760' 760'
760' 760'
750' 750'
730'
730'
710'
710'
710' 710'
700'
700'
690'
690'
690'
690'
690'
690'
690'
690'
690'
690'
680' 680'
660' 660'
760' 760'
740' 740'
700' 700'
680'
680'
680' 680'
670'
670'
670' 670'
OTLT10303
OTLT10305
OTHR11733
OTLT10315
OTLT10317

SAN MARCOS SAN MARCOS
S.D. COUNTY S.D. COUNTY
CLEN10167
CLEN10168
CIP2_J24
CIP2_J30
CIP2_J31
CIP2_J32
CIP2_J33
CIP2_J34
CIP2_J25
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 6 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 320 640
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_North Twin Oaks Valley Road

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
CIP2_C15 CIRCULAR 27.6 2.59 455.5 699.56 692.69 0 4 0 0 0 1 RCP 0 71.5 0 0.4 CIP2 CIRCULAR 97.8 2.07 264.2 692.69 691.51 0 5 0 0 0 1 RCP 0 207.6 0 1.2 CIP2_C25 CIRCULAR 97.8 2.01 287.3 691.51 688.23 0 5 0 0 0 1 RCP 0 199.5 0 0.7 CIP2_C25_2 CIRCULAR 97.8 2.02 321.3 688.23 683.51 0 5 0 0 0 1 RCP 0 197..93 0 0.6 CIP2_C25_4 CIRCULAR 125.9 2.12 328.4 683.51 678.11 0 5 0 0 0 1 RCP 0 266.5 0 0.8 CIP2_C25_5 CIRCULAR 125.9 2.11 275.0 678.11 675.03 0 5 0 0 0 1 RCP 0 266.1 0 1.0 CIP2_C26 CIRCULAR 125.9 2.12 287.3 675.03 673.38 0 5 0 0 0 1 RCP 0 266.1 0 1.4 PIPE10568 CIRCULAR 65.7 1.84 330.6 698.01 694.35 2 3.5 0 0 1 1 RCP RCP 207.1 122.4 8.7 1.1 PIPE10569 CIRCULAR 70.2 1.87 45.6 692.85 692.69 3.5 4.5 0 0 1 1 RCP RCP 242.8 135.5 4.1 1.1

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - North Basin
Project ID No.: CIP_North Twin Oaks Valley Road
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 3.0% 1.5 - 3% of subtotal $1,224,625.00 $36,738.75 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 2680 LF $20.00 $53,600.00
Connect Existing Facility 3 EA $1,500.00 $4,500.00
Cleanout (Type A) 5 EA $5,000.00 $25,000.00
Wing Type Headwall / Box Culvert Wingwall 3.75 CY $1,500.00 $5,625.00 Curb Inlet, L <10' 4 EA $5,500.00 $22,000.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 330 LF $280.00 $92,400.00
48" Reinforced Concrete Pipe 460 LF $325.00 $149,500.00 54" Reinforced Concrete Pipe 50 LF $375.00 $18,750.00
60" Reinforced Concrete Pipe 1760 LF $450.00 $792,000.00 72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 5200 LF $2.00 $10,400.00
Paving, AC 16100 SF $1.50 $24,150.00
Energy Dissipater (D-40) 1 LS $7,500.00 $7,500.00
Subtotal: $1,261,363.75
20% Contingency: $252,272.75
30% Design/Indirect: $378,409.13
Total: $1,892,045.63

CCOONNCCHHAA
LLNN

PRIVATE RD

PALOMARCOS AV PALOMARCOS AV

WWMMIISSSSIIOONN RRDD

PRIVATE RD PRIVATE RD

POMMEL WY POMMEL WY

PALMAC ST

PRIVATE RD PRIVATE RD

CCUURRRRYYCCOOMMBB DDRR

CAPALINA RD CAPALINA RD

N PACIFIC ST

SSAADDDDLLEEHHOORRNNDDRR

BALBOA ST

N PACIFIC ST N PACIFIC ST

N LAS POSAS RD

SSILILVVEERR SSPPUURR WWYY
PIPE13599
PIPE13600 PIPE16729
C5
C13
670'
670'
650' 650'
640'
640'
630'
630'
620'
620'
610'
610'
600' 600'
590'
590'
580' 580'
660'
660'
570' 570'
650' 650'
640' 640'
630'
630'
620' 620'
610'
610'
680'
680'
670'
670'
600'
600'
590' 590'
610'
610'
600' 600'
590' 590'
640'
640'
630' 630'
600'
600'
590'
580' 580'
580'
580'
570'
570'
660'
660'
560' 560'
560'
560'
650'
650'
610'
600' 600'
580' 580'
570'
570'
560' 560'
680'
680'
590'
590'
570'
570'
560'
560'
560' 560'
560'
560'

SAN MARCOS SAN MARCOS
OTHR10830 CBIN10904
CBIN10980
CBIN11023
CIP6_J10OLD
CIP6_J23OLD
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 7 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 160 320
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_West Mission Road (West Mission Road and North Pacific Street)

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
CIP6_C13 CIRCULAR 17.3 2.52 796.8 594.47 565.08 3 3 0 0 1 1 RCP 0 43.6 0 0.3 CIP6_C5 CIRCULAR 17.3 2.49 265.5 565.08 563.82 3 3 0 0 1 1 RCP 0 43.1 0 0.9 PIPE11925 CIRCULAR 36.2 2.69 76.6 563.82 562.71 2.5 3 0 0 1 2 RCP RCP 81.6 97.6 3.5 0.6 PIPE11926 CIRCULAR 38.1 2.76 260.2 562.71 560.26 2.5 3 0 0 1 2 RCP RCP 96.7 105.2 2.1 0.8 PIPE12316 CIRCULAR 39.8 2.74 266.6 560.26 556.85 2.5 3 0 0 1 2 RCP RCP 96.8 107.6 2.1 0.7

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.:

CIP_West Mission Road
(West Mission Road and North
Pacific Street)
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $549,650.00 $10,993.00 Clearing and Grubbing 1 LS $10,000.00 $10,000.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 1060 LF $20.00 $21,200.00
Connect Existing Facility 3 EA $1,500.00 $4,500.00
Cleanout (Type A) 5 EA $5,000.00 $25,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 3 EA $5,500.00 $16,500.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 1670 LF $260.00 $434,200.00 42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 3300 LF $2.00 $6,600.00
Paving, AC 8300 SF $1.50 $12,450.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $560,643.00
20% Contingency: $112,128.60
30% Design/Indirect: $168,192.90
Total: $840,964.50

AUBURN AV

AUBURN AV

BBOORRDDEENN CCRR

EE MMISISSSIIOONN RRDD

MULBERRY DR
PIPE11447
PIPE11446
690'
680'
670'
660'
650' 650'
640'
700'
700'
630' 630'
640'
630'
630'
620'
620'
660'
660'
610' 610'
670'
670'
660' 660'
650' 650'
640'
640'
620'
610'
620' 620'
610' 610'
610' 610'
600'
600'
640'
640' 640'
630' 630'
610' 610'
610' 610'
OTLT10332

SAN MARCOS SAN MARCOS
CLEN10427
INLT10277
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 8 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
Channel Confluence
Cleanout
Curb Inlet
Curb Outlet
Detention Basin
Inlet
Outlet
Other
Separator
Outfalls
Culvert
Channel wider than 5 ft
Ditch less than 5 ft wide
Elliptical
Natural Channel
Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
New
Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 140 280
Scale in Feet
North
Recommended Facilities Focus Map
Project CIP_East Mission Road

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE11446 RECT_CLOSED 119.0 2.00 582.8 610.50 604.33 3 3 0 8 1 3 CIPCP RCB 65.2 705.2 1.1 0.8 PIPE11447 RECT_CLOSED 126.0 2.09 294.6 604.33 600.98 3 3 0 8 1 3 CIPCP RCB 82.4 745.4 1.4 0.9

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - North Basin
Project ID No.: CIP_East Mission Road
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.5% 1.5 - 3% of subtotal $3,556,724.00 $88,918.10 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 2340 CY $1,500.00 $3,509,724.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 890 LF $20.00 $17,800.00
Connect Existing Facility 0 EA $1,500.00 $0.00
Cleanout (Type A) 2 EA $5,000.00 $10,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 0 EA $5,500.00 $0.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 0 LF $280.00 $0.00
48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 0 LF $2.00 $0.00
Paving, AC 0 SF $1.50 $0.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $3,645,642.10
20% Contingency: $729,128.42
30% Design/Indirect: $1,093,692.63
Total: $5,468,463.15

S PACIFIC ST

PRIVATE RD

PAWNEE ST

NAVAJO ST
KKEE

NNSSIINN

GGTTOONN
DD
RR

STARSTONE DR

S RANCHO SANTA FE RD

GRAND AV

GRAND AV

LLIINNDDAA VVIISSTTAA DDRR

STARSTONE PL

AALLPPIINNEEPPLL

LLAA MMII

RRAADDAA DDRR
09TH ST 09TH ST

SSAANNTTAA LLUUNNAA CCTT

VIA DE ANZA VIA DE ANZA

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

S LAS POSAS RD

VVIIAA VVEERRAA CCRRUUZZ
ALLEY
ALLEY

CREEK ST

CREEK ST

SEMINOLE ST

SEMINOLE ST

LLAA MMIIRRAADDAA DDRR

CHEROKEE ST

CHEROKEE ST
ALLEY
ALLEY
08TH ST 08TH ST
ALLEY
ALLEY

LLAA RROOSSAA DDRR

PRIVATE RD

TAULBEES LN TAULBEES LN

PRIVATE RD

COMMODORE DR COMMODORE DR
PIPE12159_1
CIP14_C5_5
CIP14_C5_2
CIP14_C5_3
CIP14_C5_1
CIP14_C5_6
CIP14_C5_8
CIP14_C5_9
CIP14_C5_10
CIP14_C5_7
600'
600'
590'
590'
580'
580'
570'
570'
560' 560'
550'
550'
580' 580'
570' 570'
600' 600'
590'
590'
580'
580'
570' 570'
550'
550'
540' 540'
580'
580'
530'
530'
550'
550'
580' 580'
570'
570'
560'
560'
560' 560'
560' 560'
550' 550'
550'
550'
550' 550'
540' 540'
530' 530'
600' 600'
590' 590'
570' 570'
560' 560'
560' 560'
560'
560'
540'
540'
540'
540'
540' 540'

SAN MARCOS SAN MARCOS
CIP14_J4
CIP14_J5
CIP14_J27
CIP14_J2
CIP14_J3
CIP14_J23
CIP14_J25
CIP14_J29
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 9 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
! New
! Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 310 620
Scale in Feet
North[
Recommended Facilities Focus Map
Project CIP_South Rancho Santa Fe Road

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
CIP14_C5_1 CIRCULAR 7.4 3.28 255.0 577.14 575.98 0 3 0 0 0 1 RCP 0 51.6 0 1.2 CIP14_C5_3 CIRCULAR 7.4 3.28 205.3 575.98 575.05 0 3 0 0 0 1 RCP 0 51.6 0 1.2 CIP14_C5_2 CIRCULAR 7.4 3.28 181.2 575.05 574.22 0 3 0 0 0 1 RCP 0 51.6 0 1.2 CIP14_C5_5 CIRCULAR 7.4 3.28 175.1 574.22 573.35 0 3 0 0 0 1 RCP 0 51.6 0 1.1 CIP14_C5_6 CIRCULAR 17.7 3.14 323.5 573.35 570.64 0 3 0 0 0 1 RCP 0 93.0 0 1.5 CIP14_C5_7 CIRCULAR 17.7 3.11 893.4 570.64 548.58 0 3.5 0 0 0 1 RCP 0 92.2 0 0.6 CIP14_C5_8 CIRCULAR 34.8 3.27 464.9 548.58 542.56 0 4 0 0 0 1 RCP 0 160.2 0 1.0 CIP14_C5_9 CIRCULAR 50.2 3.26 660.0 542.56 535.29 0 4.5 0 0 0 1 RCP 0 212.8 0 1.0 CIP14_C5_10 CIRCULAR 62.4 3.24 779.3 535.29 529.14 0 5 0 0 0 1 RCP 0 253.6 0 1.1 PIPE12159_1 CIRCULAR 10.3 3.74 68.4 574.78 573.35 2 2 0 0 0 2 RCP 0 52.1 0 0.8

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.: CIP_South Rancho Santa Fe Road
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 3.0% 1.5 - 3% of subtotal $1,452,850.00 $43,585.50 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 0 LF $20.00 $0.00
Connect Existing Facility 0 EA $1,500.00 $0.00
Cleanout (Type A) 9 EA $5,000.00 $45,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 3 EA $5,500.00 $16,500.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 130 LF $220.00 $28,600.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 1140 LF $260.00 $296,400.00 42" Reinforced Concrete Pipe 890 LF $280.00 $249,200.00 48" Reinforced Concrete Pipe 460 LF $325.00 $149,500.00 54" Reinforced Concrete Pipe 660 LF $375.00 $247,500.00 60" Reinforced Concrete Pipe 780 LF $450.00 $351,000.00 72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 8100 LF $2.00 $16,200.00
Paving, AC 22500 SF $1.50 $33,750.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $1,496,435.50
20% Contingency: $299,287.10
30% Design/Indirect: $448,930.65
Total: $2,244,653.25

LAS FLORES DR

KENSINGTON DR

S RANCHO SANTA FE RD

STARSTONE DR

STARSTONE PL

GRAND AV

GRAND AV

LLAA MMIIRRAADDAA DDRR

SSAANNTTAA LLUUNNAA CCTT

VIA DE ANZA VIA DE ANZA

LLAA MMIIRRAADDAA DDRR

PERDIDO PL

PERDIDO PL
08TH ST 08TH ST
09TH ST 09TH ST

LLAA RROOSSAA DDRR

TILLEY LN

COMMODORE DR COMMODORE DR

DDEE CCOORRAA
CC
RR
LLII

NNDDAA VVII

SSTTAA DDRR
PIPE11955
PIPE11990 CULV10152
PIPE11991
PIPE11989
CIP15_C1_6
CIP15_C1_8
CIP15_C1_2
CIP15_C1_3
CIP15_C1_1
CIP15_C1_5
670' 670'
660'
660'
650'
650'
640' 640'
630' 630'
620' 620'
610'
610'
600' 600'
590' 590'
600' 600'
590'
590'
580' 580'
660' 660'
650'
650'
640'
640'
640' 640'
630' 630'
620' 620'
580' 580'
570' 570'
580' 580'
570' 570'
640' 640'
630'
630'
580'
580'
570'
570'
580' 580'
560'
560'
620' 620'
610'
610'
590' 590'
580' 580'
570' 570'
600'
600'
570'
570'
570' 570'

SAN MARCOS SAN MARCOS
INLT10367
CLEN10552
INLT10363
OTLT10098
CIP15_J2_OLD
CIP15_J13
CIP15_J12
CIP15_J11
CIP15_J10
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 10 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
! New
! Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 190 380
Scale in Feet
North[
Recommended Facilities Focus Map
Project CIP_ Las Flores Drive

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE11989 CIRCULAR 16.5 3.45 212.3 604.19 596.95 2 3 0 0 1 1 RCP RCP 23.4 57.1 0.6 0.5 PIPE11991 CIRCULAR 17.9 3.45 316.2 596.91 592.65 2 3 0 0 1 1 RCP RCP 30.1 61.6 0.8 0.8 PIPE11990 CIRCULAR 17.9 3.46 44.8 592.59 591.14 2 3 0 0 1 1 RCP RCP 30.6 62.5 0.9 0.5 CULV10152 CIRCULAR 36.4 3.25 59.0 591.04 589.37 3.583 3 2.25 0 1 1 CMPA RCP 86.3 119.7 1.3 1.1 CIP15_C1_1 CIRCULAR 36.4 3.27 277.1 589.37 582.60 0 3.5 0 0 0 1 RCP 119.6 0.8 CIP15_C1_3 CIRCULAR 59.1 3.30 121.1 582.60 580.81 0 4 0 0 0 1 RCP 197.3 1.1 CIP15_C1_2 CIRCULAR 59.1 3.26 120.6 580.81 578.05 0 4 0 0 0 1 RCP 193.8 0.9 CIP15_C1_6 CIRCULAR 59.1 3.27 23.8 578.05 577.47 0 4 0 0 0 1 RCP 194.4 0.9 CIP15_C1_5 CIRCULAR 59.1 3.26 600.0 577.47 563.75 0 4 0 0 0 1 RCP 193.2 0.9 CIP15_C1_8 CIRCULAR 59.1 3.24 86.6 563.75 561.77 0 3 0 0 0 2 RCP 192.1 1.0 PIPE11955 CIRCULAR 22.0 3.40 33.7 583.70 582.60 1.333 2 2.083 0 2 2 CMPA RCP 0.3 74.9 1.0 0.9

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.: CIP_Las Flores Drive
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $723,250.00 $14,465.00 Clearing and Grubbing 0 LS $10,000.00 $0.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 740 LF $20.00 $14,800.00
Connect Existing Facility 3 EA $1,500.00 $4,500.00
Cleanout (Type A) 10 EA $5,000.00 $50,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 6 EA $5,500.00 $33,000.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 40 LF $220.00 $8,800.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 810 LF $260.00 $210,600.00 42" Reinforced Concrete Pipe 280 LF $280.00 $78,400.00
48" Reinforced Concrete Pipe 870 LF $325.00 $282,750.00 54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 4000 LF $2.00 $8,000.00
Paving, AC 8800 SF $1.50 $13,200.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $737,715.00
20% Contingency: $147,543.00
30% Design/Indirect: $221,314.50
Total: $1,106,572.50

RRIICCHHLLAANNDD
RRDD

MARILYN LN

MULBERRY DR

COX RD COX RD

RHEA LN

BBEERRKKSSHHIRIREECCTT

CRIMSON DR CRIMSON DR

MMEEDDIINNAAHHRRDD

HEIDEN CT HEIDEN CT

TWAIN CT TWAIN CT

TRES RANCHOS LN TRES RANCHOS LN

VICTORIA WY VICTORIA WY

STEVENSON CT

TTUURRNNBBEERRRRYY DDRR

EE LLAA CCIIEENNEEGGAA RRDD

PRIVATE RD PRIVATE RD

RICHLAND VIEW CT RICHLAND VIEW CT

VICTORIA WY

ZINFANDEL WY ZINFANDEL WY

SS AAVVAANNNNAAHH
WWYY

ADENA WY ADENA WY

AARRIIAANNAA RRDD

ROGERS CT ROGERS CT

PPEEBBBBLLEE BBEEAACCHH DDRR
PIPE10520
PIPE10667
PIPE10608
PIPE10403
PIPE10402
PIPE10466
CIP16_A1_C6_5
CIP16_A1_C94
CIP16_A1_C75
CIP16_A1_C6_1
CIP16_A1_C89_3
CIP16_A1_C6_2
CIP16_A1_C89_4
CIP16_A1_C82
CIP16_A1_C78
CIP16_A1_C6_3
CIP16_A1_C80
CIP16_A1_C89_1
1240'
1230' 1230'
1220'
1210'
1200'
1190'
1190'
1180' 1180' 1170' 1170'
1160' 1160'
1150' 1150'
1140'
1140'
1120'
1120' 1110'
1110' 1100'
1100'
1090'
1090'
1080' 1080'
1070'
1070'
1060'
1050'
1040'
1040'
1030'
1030'
1020'
1020'
1010'
1010'
1000'
990'
980'
970'
960'
950'
940'
930'
920'
910' 910'
900'
890'
880'
870'
860'
850'
850'
840'
840'
830'
830'
820'
820'
810'
800'
780' 780'
770'
770'
760' 760'
750'
740'
740'
730' 730'
720'
720'
700' 700'
930' 930'
920' 920'
910'
910'
900' 900'
890' 890'
880'
880'
870' 870'
860' 860'
850' 850'
840'
840'
830' 830'
820' 820'
810' 810'
800' 800'
780' 780'
770' 770'
1000'
1000'
990' 990'
980' 980'
970' 970'
990'
990'
980' 980'
970'
970'
960' 960'
950'
950'
940' 940'
930' 930'
920' 920'
910'
910'
900' 900'
890'
890'
880'
880'
870' 870'
860' 860'
800'
800'
790'
790'
780' 780'
770'
770'
760'
760'
750'
750'
730' 730'
720' 720'
710' 710'
690'
690'
700'
700'
680' 680'
670'
670'
740' 740'
730' 730'
720'
720'
700' 700'
690' 690'
680'
680'
670'
670'
970' 970'
960'
960'
950' 950'
940' 940'
790'
790'
780'
780'
770' 770'
760' 760'
750' 750'
990' 990'
980' 980'
970' 970'
960'
950'
980'
970'
960'
830'
830'
820'
820'
810'
810'
830'
830'
820' 820'
810'
810'
780' 780'
770' 770'
760' 760'
730' 730'
710' 710'
770'
770'
760' 760'
740'
740'
730' 730'
740'
720'
840'
830'
810'
810'
800'
800'
790'
800' 800'
790' 790'
750'
750'
740' 740'
700' 700'
680' 680'
680' 680'
670'
670'
850' 850'
840' 840'
720'
720'
710' 710'
1260' 1260'
1130' 1130'
790'
790'
690'
960' 960'
790' 790'
850'
850'
810'
810'
740' 740'
660' 660'
710'
710'
990' 990'
990'
990'
730'
980' 980'
830' 830'
830'
830'
760'
760'
750'
740'
740'
690'
690'
690' 690'
950' 950'
940' 940'
760'
760'
730' 730'
740'
740'
730' 730'
720'
720'
690' 690'
680'
680'
680'
680'
680'
680'
670' 670'
670'
770'
770'
700' 700'
S.D. COUNTY S.D. COUNTY

SAN MARCOS SAN MARCOS

ESCONDIDO ESCONDIDO
CLEN10120
CLEN10122
CLEN10123
CBIN10223
SEPR10005
CLEN10154
OTLT10014
CIP16_A1_J74
CIP16_A1_J75
CIP16_A1_J77
CIP16_A1_J79
CIP16_A1_J81
CIP16_A1_J93
CIP16_A1_J94
CIP16_A1_J95
OTLT10006
CIP16_J10
CIP16_J1
CIP16_J2
CIP16_J3
CIP16_J5
CIP16_J6
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet of 12)
CIP Projects
Sub-Catchments
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
! New
! Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 310 620
Scale in Feet
North[
Recommended Facilities Focus Map
Project

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
PIPE10466 CIRCULAR 42.8 2.30 112.8 725.51 722.26 3.5 3.5 0 0 1 1 RCP RCP 96.7 98.3 1.0 0.9 CIP16_A1_C89_1 CIRCULAR 42.8 2.30 215.0 722.26 715.57 0 3.5 0 0 0 1 RCP 0 98.5 0 0.8 CIP16_A1_C89_3 CIRCULAR 42.8 2.31 186.6 715.57 709.75 0 3.5 0 0 0 1 RCP 0 98.8 0 0.8 CIP16_A1_C89_4 CIRCULAR 42.8 2.29 192.9 709.75 703.71 0 3.5 0 0 0 1 RCP 0 97.9 0 0.6 CIP16_A1_C94 CIRCULAR 86.4 2.19 157.8 703.71 700.29 0 3.5 0 0 0 1 RCP 0 189.3 0 1.3 CIP16_A1_C95 CIRCULAR 86.4 2.19 104.0 700.29 697.92 0 4 0 0 0 1 RCP 0 189.2 0 0.9 CIP16_A1_C74_1 CIRCULAR 86.4 2.19 52.0 697.92 696.80 0 4.5 0 0 0 1 RCP 0 189.0 0 0.7 CIP16_A1_C74_2 CIRCULAR 201.6 1.96 138.8 696.80 693.58 0 5.5 0 0 0 1 RCP 0 395.5 0 0.8 CIP16_A1_C75 CIRCULAR 201.6 1.97 162.5 693.58 689.91 0 5.5 0 0 0 1 RCP 0 396.4 0 0.8 CIP16_A1_C77 CIRCULAR 201.6 1.97 152.3 689.91 686.47 0 5.5 0 0 0 1 RCP 0 397.2 0 0.8 CIP16_A1_C78 CIRCULAR 201.6 1.97 202.9 686.47 681.79 0 5.5 0 0 0 1 RCP 0 397.4 0 0.8 CIP16_A1_C80 CIRCULAR 201.6 1.97 207.7 681.79 677.16 0 5.5 0 0 0 1 RCP 0 397.5 0 0.8 CIP16_A1_C82 CIRCULAR 201.6 1.97 198.0 677.16 672.29 0 5.5 0 0 0 1 RCP 0 397.5 0 0.8 PIPE10607 CIRCULAR 260.6 1.94 50.6 672.29 672.00 4.5 6 0 0 1 1 RCP RCP 181.0 506.2 1.2 1.6 PIPE10608 CIRCULAR 262.7 1.94 148.8 672.00 671.36 4.5 6 0 0 1 1 RCP RCP 185.9 509.3 1.5 1.8 PIPE10406 CIRCULAR 298.1 1.96 141.3 670.87 669.00 5 6.5 0 0 1 1 RCP RCP 270.6 582.7 0.9 1.0 PIPE10402 CIRCULAR 298.1 1.96 314.8 668.96 666.79 5 6.5 0 0 1 1 RCP RCP 270.6 582.7 1.3 1.3 PIPE10403 CIRCULAR 321.4 1.94 153.6 666.79 665.36 5.5 7 0 0 1 1 RCP RCP 346.2 622.8 1.1 1.0 PIPE10520 CIRCULAR 323.3 1.94 114.2 665.36 664.33 5.5 7 0 0 1 1 RCP RCP 353.7 628.3 1.1 1.0 PIPE10667 CIRCULAR 323.3 1.95 132.3 664.33 663.13 5.5 7.5 0 0 1 1 RCP RCP 361.9 629.7 1.1 0.9 CIP16_A1_C6_1 CIRCULAR 109.8 1.96 182.0 727.88 716.36 0 3.5 0 0 0 1 RCP 0 215.4 0 0.9 CIP16_A1_C6_3 CIRCULAR 109.8 1.96 206.2 716.36 706.78 0 3.5 0 0 0 1 RCP 0 215.1 0 1.0 CIP16_A1_C6_2 CIRCULAR 112.6 1.95 191.0 706.78 701.22 0 4 0 0 0 1 RCP 0 218.9 0 0.9 CIP16_A1_C6_5 CIRCULAR 112.6 1.95 154.9 701.22 696.80 0 4 0 0 0 1 RCP 0 219.0 0 0.9

San Marcos DMP - Drainage Facilities
Subbasin San Marcos Creek - North Basin
Project ID No.: CIP_Mulberry Drive
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 2.0% 1.5 - 3% of subtotal $2,067,450.00 $41,349.00 Clearing and Grubbing 1 LS $10,000.00 $10,000.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 0 CY $1,500.00 $0.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 1140 LF $20.00 $22,800.00
Connect Existing Facility 1 EA $1,500.00 $1,500.00
Cleanout (Type A) 24 EA $5,000.00 $120,000.00
Wing Type Headwall / Box Culvert Wingwall 1 CY $1,500.00 $1,500.00 Curb Inlet, L <10' 8 EA $5,500.00 $44,000.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 1250 LF $280.00 $350,000.00 48" Reinforced Concrete Pipe 450 LF $325.00 $146,250.00 54" Reinforced Concrete Pipe 50 LF $375.00 $18,750.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 2120 LF $600.00 $1,272,000.00 Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 7700 LF $2.00 $15,400.00
Paving, AC 25700 SF $1.50 $38,550.00
Energy Dissipater (D-40) 1 LS $7,500.00 $7,500.00
Subtotal: $2,108,799.00
20% Contingency: $421,759.80
30% Design/Indirect: $632,639.70
Total: $3,163,198.50

PRIVATE RD

SMILAX RD

CCAASSAA LLII

NNDDAA WWYY

PRIVATE RD PRIVATE RD

AAVVNNDDAA
DD
EE
SSUU

EERRTTEE

MIMOSA AV

EL TIGRE

PRIVATE RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

PRIVATE RD

PRIVATE RD

PRIVATE RD
CIP17_C_C40_1
CIP17_C_C43_1
CIP17_C_C39
CIP17_C_C40_4
CIP17_C_C42
CIP17_C_C41
CIP17_C_C43
520' 520'
510' 510'
500'
500'
490' 490'
470' 470'
460'
460'
500'
500'
490' 490'
520' 520'
510' 510'
460'
460'
450' 450'
460' 460'
450' 450'
480' 480'
470'
470'
480' 480'
520'
520'
520'
520'
520'
520'
490'
490'
460'
460'
460' 460'
520' 520'
CBIN11889
OTLT10356

SAN MARCOS SAN MARCOS
S.D. S.D.

COUNTY COUNTY
CIP17_C_J39
CIP17_C_J40
CIP17_C_J41
CIP17_C_J42
CIP17_C_J43
CIP17_J1
CIP17_J2
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_F_ProjectID_FocusMaps_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX F
April, 2019
Map Legend
(Sheet 12 of 12)
CIP Projects
Sub-Catchments
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
New
Replace
Recomended Structure
! New
! Replace
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 130 260
Scale in Feet
North[
Recommended Facilities Focus Map
Project CIP_South Santa Fe Avenue

FACILITY ID

CROSS SECTION

TOTAL CONTRIBUTING AREA
MAX UNIT FLOW (cfs/ac)
LENGTH (ft)
INLET ELEVATION (ft)
OUTLET ELEVATION (ft)
EXISTING DIAMETER/HEIGHT (ft)
PROPOSED DIAMETER/HEIGHT (ft)
EXISTING WIDTH (ft)
PROPOSED WIDTH (ft)

EXISTING BARRELS

PROPOSED BARRELSEXISITNG MATERIAL

RECOMMENDED MATERIAL
MAX FLOW (cfs)
RECOMMENED MAX FLOW (cfs)

EXISTING MAX / FULL FLOW

PROPOSED MAX / FULL FLOW
CIP17_C_C39 RECT_CLOSED 147.4 2.62 86.5 467.10 463.93 0 4 0 6 0 1 RCB 0 386.7 0 0.7 CIP17_C_C40_1 RECT_CLOSED 147.4 2.62 62.0 463.93 462.38 0 4 0 6 0 1 RCB 0 386.7 0 0.8 CIP17_C_C40_3 RECT_CLOSED 147.4 2.62 49.0 462.38 461.15 0 4 0 6 0 1 RCB 0 386.7 0 0.8 CIP17_C_C40_4 RECT_CLOSED 147.4 2.62 89.5 461.15 459.98 0 4 0 6 0 1 RCB 0 386.7 0 1.1 CIP17_C_C41 RECT_CLOSED 147.4 2.62 200.5 459.98 457.90 0 4 0 6 0 1 RCB 0 386.7 0 1.2 CIP17_C_C42 RECT_CLOSED 147.4 2.62 197.6 457.90 457.21 0 4 0 6 0 1 RCB 0 386.5 0 2.1 CIP17_C_C43 CIRCULAR 147.4 2.62 205.5 457.21 448.70 0 3.5 0 0 0 4 RCP 0 386.3 0 0.9 CIP17_C_C43_1 CIRCULAR 147.4 2.63 77.0 448.70 448.06 0 3.5 0 0 0 4 RCP 0 386.7 0 1.1

San Marcos DMP - Drainage Facilities
Subbasin Las Posas Basin
Project ID No.: CIP_ South Santa Fe Avenue
Location:

Item Description Quantity Unit Unit Price Item Price
Mobilization 1 LS $10,000.00 $10,000.00
Traffic Control 1.5% 1.5 - 3% of subtotal $1,323,596.00 $19,853.94 Clearing and Grubbing 1 LS $10,000.00 $10,000.00
Prepare Storm Water Pollution Prevention Plan 0 LS $6,500.00 $0.00 Water Pollution Control 1 LS $5,000.00 $5,000.00
Project ID Sign 1 EA $1,200.00 $1,200.00
Temporary Concrete Washout (Portable) 1 LS $3,000.00 $3,000.00 Reinforced Concrete Box Culverts (Class A) 609 CY $1,500.00 $913,496.00 Dewatering 0 LS $10,000.00 $0.00
Remove Existing Pipe 0 LF $20.00 $0.00
Connect Existing Facility 1 EA $1,500.00 $1,500.00
Cleanout (Type A) 7 EA $5,000.00 $35,000.00
Wing Type Headwall / Box Culvert Wingwall 0 CY $1,500.00 $0.00 Curb Inlet, L <10' 0 EA $5,500.00 $0.00
Curb Inlet, L >10 0 EA $11,000.00 $0.00
18" Reinforced Concrete Pipe 0 LF $180.00 $0.00
24" Reinforced Concrete Pipe 0 LF $220.00 $0.00
30" Reinforced Concrete Pipe 0 LF $240.00 $0.00
36" Reinforced Concrete Pipe 0 LF $260.00 $0.00
42" Reinforced Concrete Pipe 1230 LF $280.00 $344,400.00 48" Reinforced Concrete Pipe 0 LF $325.00 $0.00
54" Reinforced Concrete Pipe 0 LF $375.00 $0.00
60" Reinforced Concrete Pipe 0 LF $450.00 $0.00
72" Reinforced Concrete Pipe 0 LF $600.00 $0.00
Grading, Excavation (1,000-20,000 C.Y.) 0 CY $45.00 $0.00 Grading, Export or Import (1,001 + C.Y.) 0 CY $40.00 $0.00 Saw Cut (AC/PCC Pvt.) 0 LF $2.00 $0.00
Paving, AC 0 SF $1.50 $0.00
Energy Dissipater (D-40) 0 LS $7,500.00 $0.00
Subtotal: $1,343,449.94
20% Contingency: $268,689.99
30% Design/Indirect: $403,034.98
Total: $2,015,174.91
Appendix G
Regional Improvements Opportunities Exhibits
A1_1
A2_1
A2_2
A2_4 A2_3
A2_5
A2_6
A3_1
A3_2
A4_1
A4_2
A4_3
A4_4
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_Index_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - 11x17 Index
Legend
Regional Improvement Oppurtunities
Contributing Area Regional BMPs
Major River / Stream
Sub-Catchements
September, 2018
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 3,000 6,000
Scale in Feet [
North
WW
OO
OO

DDLL AA
NN
DD
PPYY

RROOCCKK SSPPRRININGGSS
RRDD

SYCAMORE DR

BBOORRDDEENNRRDD

SHIRLEY DR SHIRLEY DR

RICHLAND RD RICHLAND RD

MULBERRY DR

VINEYARD RD

RICHLAND RD

KNOB HILL RD KNOB HILL RD

WWOOOODDSS DDRR

LLAAVVEENNDDEERRCCTT

BOUGHER RD

NN TTWWIINNOOAAKKSSVVAALLLLEEYY RRDD

WWBBOORRDDEENN RRDD

MMIISSSSIIOONNHHIILLLLSS CCTT

N TWIN OAKS VALLEY RD

VALPREDA RD

PPRRIIVVAATTEERRDD
DDEELL

RROOYY DDRR

RRAANNCCHHEERROOSS DDRR

SSPPRRUUCCEE DDRR

BARHAM DR BARHAM DR

NN DDEELL AAVV

FULTON RD FULTON RD

MARILYN LN

PPRRIIVVAATTEE RRDD

WWOOOODDWWAARRDD SSTT

WW IILL --EEVV
DD
RR

BB AARRHHAAMM LLNN

MAPLE AV

RRIICCHHLLAANNDD RRDD

AAUUBBUURRNN AAVV

PRIVATE RD PRIVATE RD

LAGUNA DR

JOSHUA AV JOSHUA AV

FAIRLANE AV FAIRLANE AV

FFAALLCCOONN PPLL

LARCHWOOD DR

PPRRIVIVAATTEE RRDD

PPRRIIVVAATTEE
DDYY

CARRIAGE DR

DEL SOL AV

DANE DR DANE DR

PPRRIVIVAATTEE
RRDD

ORLA ST

ENTERPRISE ST

ENTERPRISE ST

PPRRIVIVAATTEE RRDD

PPRRIIVVAATTEE DDYY

COX RD COX RD

CRIMSON DR CRIMSON DR

PPRRIIVVAATTEERRDD

KK EENNTTFF II EELLDD DDRR

CCOONNCCOORRDD PPLL

LLAA MMOORREEEE RRDD

PLACER AV PLACER AV
P

LACEBARK ST

PRRIIVVAA TT EE DDYY

PRIVATE RD PRIVATE RD

VINEYARD CT

PPOONNDDEERROOSSAA
AAVV

BBEERRKKSSHHIIRREE CCTT

VEREDA RD VEREDA RD

VENTURE ST
LLEE

GGAACCYY
DDRR

LLAAMMPPLLIIGGHHTTEERR RRDD

PRIVATE RD

PRIVATE RD

WINDY WY WINDY WY

AARR CC AA DDIIAA

BBLL UUFFFF CCTT

PPRRIVIVAATT DEDEYY

HANNIGANS WY

VVIISSTTAA VVEERRDDEE

SSHHAADDOOWW HHIILLLLSS DDRR
LLAANN

DD MMAARRKK PPLL

CATHERINE AV

VVIIAA LLAASS BBRR IISSAASS

HAZEN DR HAZEN DR

AARRIIAANNAA RRDD

ROSE RANCH RD ROSE RANCH RD

MMUUIIRRFFIIEELLDD WWYY

SETTLERS CT

BRIANT ST

BBEERRRRYYHHILILLLDDRR

TTRREESSRRAANNCCHHOOSS LLNN

DDEEEERRBBRROOOOKK DDRR

EELLIZIZAABBEETTHH SSTT

AASSHHLLNN

EELL MM

TTRR EEEE LL NN

EE MMIISSSSIOIONN
RRDD
EE

CCAARRMMEELL SSTT

CHESAPEAKE CT

PPEEAACCHH
WWYY

MMEEDDIINNAAHHRRDD

DDAALLEECCTT

HHOOLLZZAAPPPPLLEE LLNN

SSHHEELLLLYYDDRR

OOAAKKTT

RR EEEE LLNN

CCRROOWWNNVVII

EEWWCCTT

EE LLAA CCIIEENNEEGGAA RRDD

HHAARRWWIICCHH DDRR

HILL DR

VIKING LN

LLAANNCCAASSHHII

RREEPPLL

ZUZICH LN

CHERYL LN CHERYL LN

OLVIDA DR

OLVIDA DR

PPRRIVIVAATTEEDDYY

BANJO CT

BANJO CT

LINDA LN LINDA LN

GINA LN GINA LN

KKAARREENN CCTT

BBAANNYYAANN CCTT

TURNBERRY DR TURNBERRY DR

VVIINNEEYYAARRDD
RRDD

MMAALLOONNEEYY SSTT

MMEERRLLOOTT
AAVV

ADENA WY

ADENA WY

CCHHEENNIINN
WWYY

AATTWWOO

OODD PP LL

PPRRIIVVAATT EE DDYY

PPRRIIVVAATTEE DDYY

ROGERS CT

ROGERS CT

BBAA NN
DDAAKK
CC TT

FELICIA LN FELICIA LN

BOUQUET DR BOUQUET DR

MMAAYYBBRRIITTTT
CC
RR

DDOORROOTTHHEEAA AAVV

SUNSHINE LN SUNSHINE LN

HH AASSTTII NN GGSS CCTT

REDWOOD DR REDWOOD DR

ROWENA AV

PPRRIVIVAATTEERRDD

CCAANNDDEE RRAA LLNN

AADDVVEENNTTUURREELLNN

SANTAR PL

MATA WY

BBAAYY HHIILLLL DDRR

SSLILI KK

MMIILLLL PPLL
PPEEBB

BB LLEE BB
EEAACC
HH
DDRR

CARMEN CT

PINON ST

RRIIVVEE RR RRUUNN CCRR

RROOBBIINNHHOOOODDRRDD

GRENACHE LN

SUTTER LN SUTTER LN

PRIVATE RD PRIVATE RD

WWIINNDDYY PPOOIINN

TT DDRR
NN

AALLDDAA
DDRR

BBOORRDDEENN CCRR
PPRRII

VVAATTEE RRDD

WULFF ST

EE BBEELL EESSPPRRIITT CCRR

TERRACE LN

CCOOLLLLAADDOO LLNN

PRIVATE RD PRIVATE RD

PPRRIIVVAA TTEE DDYY

TTUURRTTLLEEPPOOIINNTTWWYY

GGOOLLFF GGLLEENN DDRR

PPRRIIVVAATTEE RRDD

PPRRIIVVAATTEE DDYY

PPRRIVIVAATTEE DDYY

PRIVATE
RD

PPRRIVIVAATTEE DDYY

PPRRIVIVAATTEEDDYY

CCHHEESSTTEERRFFIIEELLDD CCRR

CCHHEESSTTEERRFFIIEELLDDCCRR

PPRRIVIVAATTEE
DYDY

VICTORIA WY VICTORIA WY

VICTORIA WY VICTORIA WY
PPRRII

VVAATTEE
DDYY
S.D. COUNTY S.D. COUNTY

SAN MARCOS SAN MARCOS

ESCONDIDO ESCONDIDO
A1_1
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A1_1
April, 2019
Map Legend
(Sheet 1 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,000 2,000
Scale in Feet
North
[

COUNTRY CLUB LN COUNTRY CLUB LN

BORDEN RD BORDEN RD

MMUULLBBEERRRRYY DDRR

N NUTMEG ST N NUTMEG ST

OLIVE ST OLIVE ST

NN CCEENNTTRREE CCIITTYY
PPYY

RICHLAND RD

W EL NORTE PY

MULBERRY DR MULBERRY DR

LOMA LN LOMA LN

JJEESSMMOONNDD DDEENNEE RRDD

EELLNNOORRTTEEPPYY

VVIILLLLAA

GGEE RR DD

MULBERRY DR

MULBERRY DR

IIMMPPEERRIIAALL DDRR

CALLE MARIA CALLE MARIA

BBAARRBBAA
RR AA
DD
RR

SSLLEEEEPPYYHHOOLLLLOOWWRRDD
COX RD

LLOOWW CCHHAAPPAARRRRAALL DDRR

DAVID DR DAVID DR

PPRRIIVVAATTEE
RRDD

WOODLAND PY WOODLAND PY

NN DD EELL AAVV

NN IRIRISISLLNN

CORTEZ AV

WOOOODDLLAANNDD HHEEIIGGHHTTSS GGLLEE

SSUUNNSSEETT HHEEIIGGHHTTSS RRDD

RUBY RD

GGEEMM LLNN

S IRIS LN S IRIS LN

CCHHEEYYEENNNNEELLNN

RRIICCHHLLAA NN DD RR DD

FULTON RD FULTON RD
PPRRI

IVVAATTEERRDD
MM
EESSAA
RROO
CC
KK
RRDD

PRIVATE RD PRIVATE RD

GARY LN GARY LN

SSAAWW GG RRAASSSS GGLLEENN
LLAA

RRCCHHWW
OO

OODD DDRR

GGOOLLDDEENN CC RIRI CCLLEEDDRR

VIKING LN VIKING LN

TOYON GLEN

REES RD REES RD

CARRIAGE DR CARRIAGE DR

ROCK SPRINGS RD ROCK SPRINGS RD

DEL SOL AV

BBIIRRCCHHWWOOOODD DD RR

PRIVATE RD

RROOCCKK VVIIEEWW GGLLEENN

PPRRIIVVAATTEE RRDD

IIVVYY DDEELLLL LLNN

PPAAMMEELLAA LLNN

PPRRIIVVAATTEE
RRDD

PRIVATE RD PRIVATE RD

CRIMSON DR

EEAASSTTRRIIDDGGEELLNN

BENNETT AV BENNETT AV

RROOCCKKHHOOFFFF RRDD

BBEEAARR RROOCCKKGGLLEENN

JJAACCKK RRAABBBBIITT AACCRREESS

LLAACCEEBB
AA
RR
KK
SSTT

LLOOTTUUSS GG

LL EE NN

RRUUEEDDEE FFLLEEUURR

PPOONNDDEERROOSSAA AAVV

VEREDA RD VEREDA RD

LLAA BBRREEAA SSTT

SSII MM SSOIOI NNHHIILLLLSS CCTT

PRIVATE RD

DOUGLAS AV DOUGLAS AV

LL AARR KK HHAAVVEENN GGLLEENN

PRIVATE RD PRIVATE RD

NNOOVVAA GGLLEENN

GREENVIEW RD GREENVIEW RD

FFIRIREESSTTOONNEEDDRR

AAMMBBEERR LLNN

PPIINNEEHHUURRSSTTAAVV

CATHERINE AV CATHERINE AV

SSEE VVEENN OO AAKKEESS
RRDD

HAZEN DR HAZEN DR

ARIANA RD

ROSE RANCH RD

SSEETTTTLLEERRSSCCTT

PPRRIIVVAATTE
RE
R DD

AAMM OO RR OOSSAAGGLLEENN

SSUUMMMMIITTCCIIRRCCLLEEGGLLEENN

HHIILLCCOORRTTEEDDRR

BRIANT ST

BBEERRRRYYHHIILLLL DDRR

TTRREESSRRAANNCCHHOOSS LLNN

EELLSSEERR LLNN

CCAANNYYOONN VVIEIEWW GGLLEENN

EELLIIZZAA BB EE TTHH SSTT

SKYRIDGE LN
EELLMM

TTRREEEELLNN

HHAARROOLLDD RRDD

MARILYN LN

MARILYN LN

MMOONN TTEEGGOOAAVV

EELLKKHHOO RRNN LLNN

LLEELLAANNDD
WWYY

DDAALLEE CCTT

VVAAQQUUEERROOGGLLEENN
HHAA

RRWWIICC HH
DDRR

PPRRIIVVAA TT EE DDYY

RROOBBNINI HHIILLLL LLNN

PPOORRTTOOLLAAAAVV

LLEEOO CCTT

SSTTAARRLLIIGGHHTTGGLLEENN

CAM DR CAM DR

LINDA LN LINDA LN

GINA LN
EE DDI

ITTHH DDRR

MMOOOONNLLIIGGHHTT GGLLEENN

BBAANNYYAANN CCTT

VVIIEEWW

CCRR EESSTT GGLLEENN

ANNA LN ANNA LN

CCOOYYOOTTEE HHIILLLL GGLLEENN

ADENA WY ADENA WY

BBEELLLLII NNDDAASSTT

FELICIA LN FELICIA LN

CCHHEEYYNNEERRDD

EEUUCCAALLYYPPTTUUSS WW

OOOODD SS
RRDD
NN

CCEENNTTRREE

CCIITTYY
PPYY

MMCCLLAANNEE
LL NN

FFEELLI

ICCEE DDRR

FFUUEERRTTEE LL NN
NN

CCEENNTTRREE

CCIITTYY
PPYY

PPRRIIVVAA TT EERRDD

PRIVATE RD PRIVATE RD

LLAA PPAALLOOMMAA AAVV

RUE MONTREUX

RUE MONTREUX
PP

HHAAWWAAIIIIPPLL IINN OONNSSTT

RRIIVVEERR RRUUNN CCRR

CCAASSAA RREEAALL LLNN

LLAA MMIIRRAADDAA AAVV

MMUUDDGGEELLNN

WULFF ST

JJEE SSMMOONNDD DDEENNEE HHEEIGIGHHTTSS RRDD

CC OOLLLLAADDOO LLNN

PPRRIVIVAATTEERRDD

PRIVATE RD PRIVATE RD

RRUUAAMMIICCHHEELLLLEE

BUTTERFIELD LN BUTTERFIELD LN

CCOOUUNNTTRRYY VVIIEEWW GGLLEENN

PPRRIIVVAATTEERRDD
UUNNNNAAMMEEDD44BB SSTT

PPRRIVIVAATTEE
DDYY

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEE DDYY
PPRRII

VVAATTEE
RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

SAN MARCOS SAN MARCOS
S.D. COUNTY S.D. COUNTY

ESCONDIDO ESCONDIDO
A2_1
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_1
April, 2019
Map Legend
(Sheet 2 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,300 2,600
Scale in Feet [
North

VVIISSTTAA

VVEERRDDEE

KKNNOOBB HHIILLLL RRDD

VVIIAA LLAA RRAANNCCHHIITTAA

BBOORRDDEENN RRDD

VISTA VERDE

RICHLAND RD RICHLAND RD

MMIISSSSIIOONN HHILILLLSSCCTT
RPRP

IIVVAATTEE DDYY

PRIVATE RD

BOUGHER RD BOUGHER RD

GGLLEENN AAVVOONN
DDRR

MULBERRY DR MULBERRY DR

NN DDEELL AAVV

VVIIAA TTEERREESSAA

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

GLENHEATHER DR

RICHLAND RD

FULTON RD FULTON RD

LLAANNCCEERR PPAARRKK AAVV

FAIRLANE AV

LARCHWOOD DR

LLAACCEEBBAARRKKSSTT

ROCK SPRINGS RD ROCK SPRINGS RD

DEL SOL AV

PPRRIIVVAATTEE DDYY

WWOOOODDLLAANNDD PPYY

PRIVATE RD PRIVATE RD

PRIVATE DY PRIVATE DY

VEREDA RD VEREDA RD

MMEELLIINNDDAA AAVV

BROOKDEL AV
PPRRII

VVAATTEEDDYY

HANNIGANS WY

HANNIGANS WY

SSHHAADDOOWW HHILILLLSSDDRR

CCAAMMMMAATTEEOO

CATHERINE AV CATHERINE AV

DALE CT

DALE CT

HAZEN DR HAZEN DR

SETTLERS CT SETTLERS CT

JULIE CT JULIE CT

BBEERRRRYYHHIILLLL DDRR

EELLIIZZAABBEETTHH SSTT

SSTTAARRLLININGGWWYY

NOREEN CT

NOREEN CT

JJAANNEETT PPLL

CCAALLLLEE AADDEELLAA

SANTAR PL SANTAR PL

E MISSION RD

MANDEVILLA CT MANDEVILLA CT

BAYBERRY CT BAYBERRY CT

ORLANDO ST ORLANDO ST

WWOOOODDLLAANNDDCCTT

PRIVATE RD

RREEDDHHIILLLL LLNN

CALLE VELA

SSUUTTTTEERR CCTT

HHAARRWWIICCHH DD
RR

MMOONNTTEERREEYYCCRR

CCAALLLLEE JJUUAANNITITAA

FFLLAA GGSSTTOO NN EE CC TT

PRIVATE DY PRIVATE DY

MATA WY

SSHHAADDOOWW HHIILLLLSS CCTT

PRIVATE RD PRIVATE RD

ZUZICH LN

CHERYL LN

PPRRIIVVAATTEE
DDYY

BANJO CT BANJO CT

WWININTTEERRGGRREEEENNPPLL

LINDA LN LINDA LN

SSTTOONNEEHHEEDDGGEEPPLL

PRIVATE DY PRIVATE DY

FELICIA LN FELICIA LN

MEADOWVIEW LN MEADOWVIEW LN

DOROTHEA AV

HHAASSTTININGGSS CCTT

ADVENTURE LN ADVENTURE LN
PPRRII

VVAATTEERRDD

RIVER RUN CR

PRIVATE RD

SSUUTTTTEERR LLNN

PRIVATE DY PRIVATE DY

PPRRIIVVAATTEE DDYY

PPRRIIVVAATTEEDDYY

PRIVATE DY

PRIVATE DY PRIVATE DY

PRIVATE DY PRIVATE DY

PRIVATE DY PRIVATE DY
PPRRII

VVAATTEEDDYY

PRIVATE DY PRIVATE DY

PRIVATE DY PRIVATE DY

PRIVATE DY PRIVATE DY

PP RR IIVVAATTEE DDYY

PPRRIIVVAATTEE DDYY

PPRRIIVVAATTEE DDYY

PP RR IIVVAATTEE DDYY

PPRRIIVVAATTEE DDYY

PPRRIIVVAATTEE
DY
DY

SAN MARCOS SAN MARCOS
A2_2
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_2
April, 2019
Map Legend
(Sheet 3 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 525 1,050
Scale in Feet [
North

BBOORRDDEENN RRDD

CCOOUUNNTTRRYY CCLLUUBB DDRR

WWOOOODDLLAANNDDPPYY

N NUTMEG ST N NUTMEG ST

NN CCEENNTTRREE CCITITYY PPYY

RICHLAND RD RICHLAND RD
WW

EELL NNOORRTTEE PPYY

SSTTAANNLLEEYY AAVV

MULBERRY DR MULBERRY DR

LOMA LN

JJEESSMMOONNDDDDEENNEE
RRDD

VINEYARD RD VINEYARD RD

RICHLAND RD RICHLAND RD

E MISSION RD

RROO CCKK SSPPRRIINNGGSSRRDD

NN AASSHHSSTT

EL NORTE PY

VV IILLLLAAGGEE RRDD

WWAALLNNUUTT

HHIILLLLSS
DDRR

IMPERIAL DR

CCAALLLLEE MMAARRIIAA

GGRRAAPPEE SSTT

WOODWARD ST WOODWARD ST

MMISISSS IOOI NN

HHILILLLSS CCTT

MMEESSAA

RROOCCKK
RRDD

SSLLEEEEPPYY

HHOOLLLLOOWW
RRDD

BARHAM LN

NORDAHL RD NORDAHL RD

MONTIEL RD

CCOOUUNNTTRRYY CCLLUUBB
LLNN
RR

AANN CC HH EE RROO
SS
DD
RR

DAVID DR DAVID DR

PPRRIIVVAATTEE RRDD
NN
DDEELL
AAVV
SS
HH

EELLLLYY
DDRR

N IRIS LN N IRIS LN

PPRRIVIVAATTEE
RRDD

CORTEZ AV

WW OOOO DD LL AANNDD HHEEIIGGHHTTSS GGLLEE

N BROADWAY N BROADWAY

SSUUNNSSEETT HHEEIIGGHHTTSS RRDD

RUBY RD RUBY RD

GGEEMMLLNN

BOUGHER RD BOUGHER RD

VVIIAA TT EE RREESSAA

PRIVATE RD PRIVATE RD

GGAARRDDEENN VVAALLLLEEYY GGLL

RRICICHHLLAANNDD
RRDD

FULTON RD

PPRRIIVVAATTEE
RRDD

AAUUBBUURRNN AAVV

PPRRIIVVAATTEE RRDD

GARY LN

SSAAWWGG RRAASSSS GGLLEE NN

KNOB HILL RD

AAUUTTOO PPAARRKKWWYY

FFAALLCCOONN PPLL

LLAARRCCHHWWOOOODD DDRR

GGOOLLDDEENNCCIIRRCCLLEE
DDRR

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

HHIILLLL VVAALLLLEEYY DDRR

TOYON GLEN

AAVVNNDDAACCHHAAPPAALLAA

BARHAM DR

CCAARRRRIIAAGGEE DDRR

MISSION RD

MISSION RD

CCAARR WAAWAAYYSSTT

CRIMSON DR CRIMSON DR

DEL SOL AV

DEL SOL AV

PRIVATE RD PRIVATE RD

RROOCCKK VVIIEE WW GGLLEENN

PPRRIIVVAATTDDEERR

IIVVYY DDEELLLL LLNN

PAMELA LN PAMELA LN

CALAVO DR CALAVO DR

SSIILLVVEERR SSHHAADDOOWW DDRR
PP

RRIIVVAATTEE
RRDD

EEAASSTTRRIIDDGGEE LLNN

BBEENNNNEETTTT AAVV

RROOCCKKHHOOFFFF
RR DD

DDAANNEEDDRR BBEEAARR RROOCCKK GGLLEENN

JJAACCKK RRAABBBBIITT AACCRREESS

VVIIAA LLAA
RRAA
NN
CC

HHIITTAA

PPLLAACCEERR AAVV

AAUUGGUUSSTTAA DDRR

LLAACCEEBBAARRKK SSTT

RRIINNCCOONN AAVV

LLOOTTUUSS GG LLEENN

PPRRIIVVAATTEE RRDD

VEREDA RD

AADDEELLEELLNN

PRIVATE RD

LLAA BBRREEAA SSTT

LLAA MMOORREEEE RRDD

PRIVATE RD

DOUGLAS AV DOUGLAS AV

NNOOVVAA GGLLEENN

FFIIRREESSTTOONNEE DDRR

SSHHAADDOOWW

HHIILL LLSS
DD
RR

AAMMBBEERR LLNN

PRIVATE RD PRIVATE RD

CCAAMM MMAATTEEOO

CATHERINE AV

CATHERINE AV

SSEEVVEENNOOAAKKEESS RRDD

EEDDGGEEWWAATTEERRDDRR

ROSE RANCH RD

JJEESSMMOONNDDDDRR
AA

MMOORROOSSAAGGLLEENN

SSUUMMMMIITT CCIIRRCCLLEE GGLLEENN

HHIILLCCOORR TTEE
DD
RR

BRIANT ST

BRIANT ST

BBEERRRRYYHH LI
LI LL
DDRR

REES RD REES RD

EELL SSEERR LLNN

CC AA NNYYOO NN VVIIEEWW GGLLEENN

EELLII AAZZ BBEETTHH SSTT

SSKKYYRRIIDDGGEE
LL NN

EELLMM TTRREEEE LLNN

OPPER ST

OPPER ST
HHAA

RR OOLLDD RRDD

EELLKKHH OO RR
NN
LLNN

LLEELLAANNDD
WWYY

DD AA LL EE CCTT

CENTER DR

AARRBBOORR LLNN

VVIIAA DDOORRAA DDOO
M LN

HHAARRWWIICCHH DD

HILL DR
RR

HILL DR

VIKING LN VIKING LN

RROOBBIINN HHIILLLL LLNN

PPOORRTTOOLLAA
AAVV

CAM DR CAM DR

PP RRIIVVAATTEE RRDD

NN CCEENNTTRREE CCITITYY PPYY

CCHHEEYYEENNNNEE LLNN
PP

RR IIVVAA TTEE RRDD

MEYERS AV

RROOSS EE AARRBBOORR DDRR

MMOOOONNLL IIGGHHTT GGLLEENN

BB AANNYYAANN CCTT

VVIEIEWWCCRREESSTT GGLLEENN

CCOOYYOOTTEE HHIILLLL

GGLLEENN
WW
OO
OO

DD LL AA NNDD HHEEIIGGHHTTSS GGLLEE

LLEEAAFF LLNN

BBEELLLLININDDAASSTT

PPIINNEE

HHEEIGIG

HHTTSS WWYY

CCOORRPPOORRAATTEEDDRR

RRAACCHHEELL CCRR

AACCCCEESSSSRRDD

MATA WY

MATA WY
NN

CCEENNTTRREE CCITITYY
PPYY

VIDAS CR VIDAS CR

PRIVATE RD

HHAAWWAA IIII PPLL

PPIINNOONN SSTT

PPRRIIVVAATTEE RRDD

PPRRIIVV AATTEE RRDD

PPIZIZAARRRROO LLNN

NN AALLDDAADDRR

PP RRII VVAATTEE RRDD
LLAA

MMIIRRAADDAA AAVV

BBOORRDDEENN CCRR
VVIIAA

PPAALL OOMMAA

MMUUDDGGEELLNN

WULFF ST

WULFF ST
SS
UU

TTTTEERR
LLNN
UNNAMED 9M ST

TERRACE LN TERRACE LN

PRIVATE RD

MILPAS DR

RRUUAA MMIICCHH

EELL LLEE

PPRRIIVVAATTEE RRDD

EENNGGLLIISSHHHH

OOLLLLYY LLNN

BUTTERFIELD LN BUTTERFIELD LN

CCOOUUNNTTRRYY VVIIEEWW GGLLEENN

RRUUEE MMOONNTTRREEUUXX

WWOOOODDLLAANNDD HHEEIIGGHH TTSS GGLLEE
UUNNNNAAMMEEDD44BB
SSTT

PPRRIIVVAATTEEDDYY

PRIVATE RD

PPRRIIVVAATTEEDDYY

PPRRIIVVAATTEE
RR
DD

PPRRIVIVAATTEE
DYDY

PPRRIIVVAATTEE RRDD

PPRRIIVVAATTEERRDD

PRIVATE RD

PRIVATE RD

PPRRIVA
IV

ATTEERRDD

SAN MARCOS SAN MARCOS
S.D. COUNTY S.D. COUNTY

ESCONDIDO ESCONDIDO
A2_3
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_3
April, 2019
Map Legend
(Sheet 4 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,500 3,000
Scale in Feet
North
[

COUNTRY CLUB DR COUNTRY CLUB DR

WWOOOODDLLAANNDDPPYY

BOUGHER RD BOUGHER RD

LIVE OAK RD LIVE OAK RD

LLAA MMOORREEEE RRDD

EE MMIISSSSIIOONN RRDD

WWAALLNNUU
HTHT

LLII LL SS DDRR

GGRRAAPPEE SSTT

BBLLOOOOMMFFIIEELLDDAAVV

VVILILLLAAGGEE DDRR

RRAANNCCHHEERROOSS DDRR

CCOORROONNAADDOO HHILILLLSSDDRR

NN TTWWIINN OO

AAKKSS VVAALLLLEEYY RRDD

SS HH EELLLLYY
DD
RR

VVIIAA TTEERREESSAA

KKNNOOBB HHIILLLL RRDD

BBAARRHHAAMM LLNN

PPRRIVIVAATTEE RRDD

WWHHIISSPPEERRININGG

WWAATTEERR DDRR

CCOOCCOOSSDDRR

VALPREDA RD

VVIIAAMMAARRII AA

WWAASSHHIINNGGTTOONNIIAADDRR

MMAARRQQUUEETTTTEE AAVV

AAUUTTOO PPAARR KK
WWYY

ROSS DR ROSS DR

ALMOND RD ALMOND RD

PRIVATE RD PRIVATE RD

TRILOGY ST TRILOGY ST

PRIVATE RD PRIVATE RD

HHIILLLL VVAALLLLEEYY DDRR

REDEL RD

AAVVNNDDAA CCHHAAPPAALLAA

MISSION RD

BBAARRHHAAMM DDRR
VVIIAA

DDEELL CC AABBAALLLLOO

ENTERPRISE ST ENTERPRISE ST

PPRRIIVVAATTEE RRDD

EE SSAANN MMAARRCCOOSS BBLL

VVIIAA CCAA MM EELLLLIIAA

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEE RRDD

S TWIN OAKS VALLEY RD S TWIN OAKS VALLEY RD

PPRRIIVVAATTEE RRDD

PPRRIIVVAATTEE RRDD

VVIIAA DDEE LL CC AA MMPPOO

VVIIAA LLAA RRAANNCCHHIITTAA

CAMPUS WY

PRIVATE RD PRIVATE RD

PPAASSEEOO AA

LLEEGGRREE

PPRRIVIVAATTEERRDD

AADDEELLEE LLNN

PRIVATE RD PRIVATE RD
VVEENN
TT
UU

RR EE SS
TT

PRIVATE RD PRIVATE RD

PPAALLOOMMAARR
DDRR

OOAAKK VVIIEEWW
WWYY

PRIVATE RD PRIVATE RD

EEDDGGEEWWAATTEERR
DD
RR

MICRO PL MICRO PL

BENNETT AV

BENNETT AV
CCAAMM

HH EERRMMOO SS OO
VVIIAA

BBEELLLLEEZZAA

CCAAMMVVEE RRDDEE

CCRRAAVVEENN DDRR

EDEN VALLEY LN EDEN VALLEY LN

CENTER DR CENTER DR

FFLLOOWWEERR HHLIILLL WWYY

AAVVNNDDAA EELLEENNAA

HHIILLLLVVAALL LLEEYY
RRDD

STREET E

PROGRESS PL PROGRESS PL

PICO AV

OPPER ST OPPER ST

CCOOUUNNTTRRYYCCLLUUBB LLNN

E CARMEL ST E CARMEL ST

NORTH CITY DR NORTH CITY DR

VVIIAA DD OORRAADDOO

AURORA AV AURORA AV

AARRBBOORR LLNN

HILL DR

SSIILLVV EE RR SSHHAADDOOWW DD
RR

SSAANNDDYY LLNN
PPRRII

VVAATTEE
RRDD

OLVIDA DR

INDUSTRIAL ST

MEYERS AV MEYERS AV

RROOSSEEAARRBBOORR DDRR

CCOONNDDOORRLLNN

PPRRIVIVAATTEE RRDD

PRIVATE RD PRIVATE RD

REES RD
VVIAIA
LLAA
PPAAZZ

SHUBIN LN SHUBIN LN

DD AAYY LL IILLYY CCTT

CCAAMMPPUUSSVVIEIEWWDDRR
SS

TTWWIINN

OOAAKKSS

VVAALLLL
EEYY
RR
DD

TERRIER WY TERRIER WY

MID CITY LN MID CITY LN

PRIVATE RD PRIVATE RD

MATA WY

CCAAMMTTOO AA CCAASSAA

PRIVATE RD PRIVATE RD

PPEEAARRLLEE AA FFCCTT

SURREY LN SURREY LN

CCOORRPPOORRAATTEEDDRR

VVIINNTTAAGGEE
TT

PP DDRR

KKEELL LLOOGG GG
SSTT

PRIVATE RD PRIVATE RD

DON LEE PL

SANTAR PL SANTAR PL

CCOO VV EE CCTT

TRADE ST
PPRRI

VVI AATTEERRDD

JJAASSOONNLLNN

SSAADDDDLLEE BBAACCKK WYY

CCYYCCAADD DDRR
UUNNNNAAMMEEDD 99NN SSTT

PPRRIIVVAATTEE RRDD

DDIINNAARRAADDRR
VVIIAA
DDEELL

PPRRAADDOO

CCAAMM DDEE LLAA CC IIMMAA PPRRIIVVAATTEE RRDD
UNNAMED 9M ST UNNAMED 9M ST

TERRACE LN

DENISE CT DENISE CT

PPHHOOEENNIXIX WWYY

SUPREME CT SUPREME CT

PPRRIIVVAATTEE RRDD

PPRRIIVVAATTEE RRDD

MILPAS DR MILPAS DR
CCII

VVIICC CCEENNTTEERR DDRR

PPRRIIVVAATTEE RRDD

BB EELLLLAA

VVIITTAA WWYY

CCAAMMPPUUSS VVII

EEWW DDRR

PPRRIVIVAATTEERRDD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD
VIAVIA

AARRBBOO LL EESS

SAN MARCOS SAN MARCOS
S.D. COUNTY S.D. COUNTY

ESCONDIDO ESCONDIDO
A2_4
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_4
April, 2019
Map Legend
(Sheet 5 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,000 2,000
Scale in Feet [
North

COUNTRY CLUB DR COUNTRY CLUB DR

LLIIVVEEOOAAKK RRDD

LLAA MMOORREEEE RRDD

E MISSION RD

WWAALLNNUUTT HH LILI LLSSDDRR

DDININAARRAA DD RR

RRAANNCCHHEERROOSS DDRR

VENTURE ST

SS HHEELLLLYY
DDRR

BBAALLLLOOWW
WYY

BARHAM LN BARHAM LN

PPRRIVIVAATTEE RRDD

WWHHISISPPEERRININGGWWAATTEERRDDRR

CCOOCCOOSS DDRR

CCOORROONNAADDOOHHILILLLSS DDRR

EE CCAARRMMEELL SSTT

WWAASSHHININGGTTOONNII
AADDRR

CRAVEN DR CRAVEN DR

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

HHIILLLL VVAALLLLEEYY DDRR

REDEL RD
VVIIAA

DDEELL CC AABBAALLLLOO

MONTIEL RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

VVIIAA DDEE LL CC AAMMPPOO

PPRRIIVVAATTEE RRDD

CAMPUS WY

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEE RRDD

PPRRIVIVAATTEE RRDD

AADD EELLEE LLNN

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

BARHAM DR

ENTERPRISE ST ENTERPRISE ST

PPRRIVIVAATTEERRDD

EEDDGGEEWWAATTEERR
DDRR

MICRO PL MICRO PL

BENNETT AV

BENNETT AV

CCAA MM HH
EERRMM

OO SSOO

PALOMAR DR PALOMAR DR

CCAAMM VVEERRDDEE

FFLLOOWWEERR HH LILI LLWWYY

HHIILLLL

VVAALLLLEEYY
RRDD

PROGRESS PL PROGRESS PL

MMEEYYEERRSSAAVV

AALLOOEECCTT

OPPER ST OPPER ST

CCOOUUNNTTRRYYCCLLUUBB LLNN

BARHAM DR BARHAM DR

NORTH CITY DR NORTH CITY DR

SSII LLVV

EE RR SSHHAADDOOWWDDRR

INDUSTRIAL ST

SSAANNDDYYLLNN

PRIVATE RD PRIVATE RD

S CARMEL RD

PRIVATE RD PRIVATE RD

OLVIDA DR

RROOSSEE AARRBBOORR DDRR

HILL DR

CCOONNDDOORRLLNN

PPRRIVIVAATTEERRDD

PRIVATE RD PRIVATE RD

DD AAYY LL IILLYY CCTT

HHILILLL VVAALLLLEEYY DDRR

CCAAMMPPUUSSVVIIEEWW DDRR

PRIVATE RD PRIVATE RD

CCAAMMTTOO AA CCAASSAA

PPRR VIVI AATTEE RRDD

SURREY LN SURREY LN
PP
RRI

IVVAATTEE RRDD

CCOORRPPOORRAATTEEDDRR

VVININTTAAGG EE

TTPP DDRR

PRIVATE RD PRIVATE RD

CCOO VV EE CCTT

TRADE ST

SSAADDDDLLEEBBAACCKK WYY

CYCAD DR CYCAD DR

PPRRIIVVAATTEE RRDD

CCAAMM DDEE LLAA CCII MM AA

PPRRIIVVAATTEE RRDD
UNNAMED 9M ST UNNAMED 9M ST

PPHHOOEENNIXIX WWYY

SUPREME CT SUPREME CT

EDEN VALLEY LN EDEN VALLEY LN

MILPAS DR MILPAS DR

CCAAMMPPUUSSVVII

EEWW DDRR

PPRRIVIVAATTERERDD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

SAN MARCOS SAN MARCOS
S.D. COUNTY S.D. COUNTY

ESCONDIDO ESCONDIDO
A2_5
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_5
April, 2019
Map Legend
(Sheet 6 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 840 1,680
Scale in Feet [
North

BORDEN RD BORDEN RD

CCOOUUNNTTRRYYCCLLUUBB LLNN

SHIRLEY DR

RRIICCHHLLAANNDD
RRDD

MMUULLBBEERRRRYY DDRR

VINEYARD RD VINEYARD RD

EL NORTE PY

LLAAVVEENNDDEERR CCTT

CALLE MARIA CALLE MARIA
BBAA

RRBBAARRAA DDRR

RRIICCHHMMAARRAAVV

W MISSION RD

PPRRIIVVAATTEE RR
DD

DDEELL RROOYY
DDRR

RICHLAND RD RICHLAND RD

SSPPRRUUCCEE DDRR

WOODLAND PY WOODLAND PY

NN DDEELL AAVV

WWOOOODDLLAANNDD HHEEIIGGHHTTSSGGLLEE

WWIILL--EEVV DDRR

RUBY RD

BOUGHER RD BOUGHER RD

MAPLE AV

MAPLE AV

GGLLEENNHHEEAATTHHEERR DD RR

RRIICCHH LLAA NN DD RR DD

NN TTWWININ OOAAKKSSVVAALLLLEEYY RRDD

FULTON RD FULTON RD
PPRRI

IVVAATTEE RRDD

AAUUBBUURRNN AAVV

PRIVATE RD PRIVATE RD

LAGUNA DR LAGUNA DR

JOSHUA AV

SSAAWW GGRRAASSSS GGLLEENN

FAIRLANE AV

KKNNOOBB HHIILLLL RRDD

FFAALLCCOONN PPLL

LARCHWOOD DR

GOLDEN CIRCLE DR GOLDEN CIRCLE DR

CHRISTEN WY CHRISTEN WY

PPRRIIVV AATTEE DDYY

WWOOOODD SS DD
RR

PPRRIIVVAATTEEDDYY

CARRIAGE DR CARRIAGE DR

ROCK SPRINGS RD ROCK SPRINGS RD

DEL SOL AV

PRIVATE RD

NN TTWININOOAAKKSS VVAALLLLEEYYRRDD

FFIRIREEBBIRIRDD LLNN

DANE DR

PPRRIIVVAATTEE RRDD

ORLA ST

ORLA ST

PAMELA LN PAMELA LN

WWOOOODDWWAARRDDSSTT
ALLEY

PRIVATE RD PRIVATE RD

CCRRIIMMSSOONN
DDRR

KKEENNTTFFII EELLDD DDRR

CCOO NN CC OO

RR DD PPLL

PLACER AV
LLAA
CCEEBB
AA
RR
KK
SSTT

PPRRIVA

IVATTEE DDYY

BBEENNNNEETTTT AAVV

VINEYARD CT VINEYARD CT

PPOONNDDEERROOSSAA AAVV

VEREDA RD VEREDA RD

BBUUTTTTEERRWWOOOODD AAVV

LLEEGGAACCYY DDRR

LLAAMMPPLLII

GGHHTTEERR RRDD

PRIVATE RD

DOUGLAS AV DOUGLAS AV

ROMA AV

WWIINNDDYY WWYY

AARRCCAADDIIAA BBLLUUFFFF CCTT

PPRRII VVAATTEEDDYY

HANNIGANS WY

HANNIGANS WY

VVIISSTTAA VVEERRDDEE

SSHHAADDOOWW HHIILLLLSS DDRR

HHIILLCCOORRTTEEDDRR

LLAANNDDMMAARRKK PPLL

CATHERINE AV CATHERINE AV

HAZEN DR HAZEN DR

ARIANA RD

ROSE RANCH RD

SUNBURY ST SUNBURY ST

SETTLERS CT SETTLERS CT

PPRRII VVAATTEE RR DD

AMBER DR

SSUUMMMMIITTCCIIRRCCLLEEGGLLEENN

WWBBOORRDDEENN RRDD

BRIANT ST

BBEERRRRYYHHIILLLLDDRR

TTRREESS RRAANNCCHHOOSSLLNN

EELLIIZZAABBEETT HH SSTT

AATTSS RRLLNINI

GG WW YY
ASH LN
EELLMM

TTRREEEE LLNN

CHESAPEAKE CT CHESAPEAKE CT

PPEEAACCHHWWYY

DALE CT

DALE CT

HHOOLLZZAAPPPPLLEELLNN

OOAAKKTTRREEEE LLNN

CC RR OO WW NNVVIIEEWW CCTT
HHAA

RRWWIICCHH DDRR

VIKING LN VIKING LN

MMAALLOONNEEYYSSTT

SSTTAARRLLIIGGHHTTGGLLEENN

PRIVATE RD PRIVATE RD

ZUZICH LN

CHERYL LN
EEMMII

SSSSIIOONNRRDD

LLOORRRRII WWYY

PP RRIIVVAATTEE DDYY

BANJO CT BANJO CT

LINDA LN LINDA LN

GINA LN
EEDDI

ITTHH DDRR
KK AA

RR EENN CCTT

LLOOUUIISSDDRR

BBAANNYYAANN CCTT
VVII

EEWWCCRREESSTT GGLLEENN

VVININEEYYAARRDDRRDD

ANNA LN ANNA LN

ADENA WY ADENA WY

CCHHEENNIINNWWYY

AATWTWOOOODD PP LL

ORLANDO ST ORLANDO ST

PPRRIVI AVATTEE DDYY

PPRRIVIVAATTEE
DDYY

BBAANNDDAAKKCCTT

FELICIA LN FELICIA LN

BOUQUET DR BOUQUET DR

MMAAYYBBRRIITTTTCCRR
DDOO

RROOTTHH EEAA
AAVV

SUNSHINE LN SUNSHINE LN

HHAASSTTININGGSS CCTT

REDWOOD DR REDWOOD DR

ROWENA AV ROWENA AV

ADVENTURE LN ADVENTURE LN

AACCCCEESSSS
RRDD

FELICE DR

SSIILLKK MMIILLLL PPLL

PPEEBBBBLLEE BBEEAACCHH DDRR

CARMEN CT CARMEN CT
PPRRII

VVAATTEERRDD

PINON ST

RRIIVVEERR RRUUNN CC

GRENACHE LN GRENACHE LN
RR

CCAASSAA RREEAALL LLNN

PRIVATE RD

WWININDDYY PPOOIINNTT DDRR

NN AALLDDAA DDRR

BBOORRDDEENN CCRR

EE BBEELL EESSPPRRIITT CCRR

PPRRIIVVAATTEE RRDD

WULFF ST

SSUUTTTTEERR LLNN

CCOOLLLLAADDOO LLNN

PRIVATE RD PRIVATE RD
PPRRII

VVAATTEERRDD

BUTTERFIELD LN BUTTERFIELD LN

MMIICCHHAAEELL GG LLEENN

CCOOUUNNTTRRYYVVIIEEWWGGLLEENN

TT UURRTTLLEEPPOOIINNTTWWYY

GGOOLLFFGGLLEENN DDRR

PRIVATE RD PRIVATE RD

PPRRIIVV AATTEERRDD

PRIVATE DY PRIVATE DY

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEE DDYY

PPRRIIVVAATTEE DDYY PPRRIIVVAATTEE DDYY

CCHHEESSTTEERRFFIIEELLDD
CC
RR

CCHH EE SS TTEE RRFFIIEELLDD CCRR

PRIVATE PRIVATE DYDY

PPRRIIVVAATTEE
DY
DY
PPRRII

VVAATTEE
RD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD

PP RR IIVVAATTEE
DD YY
S.D. S.D.

COUNTY COUNTY

SAN MARCOS SAN MARCOS

ESCONDIDO ESCONDIDO
A2_6
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A2_6
April, 2019
Map Legend
(Sheet 7 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,000 2,000
Scale in Feet [
North

HHEENNSSOONN HHEE IIGGHHTTSSDDRR

CCOONNCCHHAA LLNN

S LAS POSAS RD S LAS POSAS RD

RICHMAR AV

CCAAMM DDEELL SSOOLL

W SAN MARCOS BL W SAN MARCOS BL

PICO AV

NN LLAA SS

PPOOSSAASS
RR
DD

N TWIN OAKS VALLEY RD N TWIN OAKS VALLEY RD

KKNNOOLLLL RRDD

CCAANNOOPPYYDDRR

PRIVATE RD PRIVATE RD

PPAA LL OOMMAARRCCOOSS AAVV

W MISSION RD

E MISSION RD
RR

AANN CCHH EERR OOSS
DDRR

PPAALLOO AALLTTOO CCTT

PALMAC ST PALMAC ST

WWBBOORRDDEENNRRDD

PRIVATE RD

CHRISTEN WY CHRISTEN WY

PRIVATE RD

PPOOMMMEELL WYY

FFIRIREEBBIRIRDD LLNN

FFITITZZPPAATTRRICICKK RRDD

AAVV NN DDAA

AAGGUUIILLAA

WW BBEELL EESSPPRRITIT CCRR

CCAARRLLAANNNNDDRR

PLEASANT WY PLEASANT WY

PICO AV PICO AV

S PACIFIC ST S PACIFIC ST

PPEETTUUNNIIAA
CCTT

CAPALINA RD

BINGHAM DR BINGHAM DR

N PACIFIC ST N PACIFIC ST

LLEEGGAACCYY DDRR

MARCOS ST

MARCOS ST

WWIINNDDYY WWYY

GRAND AV

KKIIRRKKWWAALLLL DDRR
VVIIAA

VVEERRAA
CC
RR
UU
ZZ

CCAALLLLEE CCAAPP SISI TTRRAANNOO

GGLLEENNDDAALLEE AAVV

N ECHO LN

ROMA AV

EE SSAANN MMAARRCCOOSS BBLL

BBEELL EESSPPRRIITT CCRR
ALLEY

BBUUSSHHLLNN

AUTUMN DR

AAVVNNDDAA AAZZUULL

CHESAPEAKE CT CHESAPEAKE CT

LIBERTY DR LIBERTY DR

N PACIFIC ST N PACIFIC ST
ALLEY

BAILEY CT

CTE CIELO CTE CIELO

AALLLLIISSOONN LLNN

CCHHAAMMII

SSEE CCTT

CCTTEE DDUULLCCEE

LLAA MMIIRRAADDAA DDRR

CCTTEE BBEELLLLOO

PRIVATE RD PRIVATE RD

GRANITE RD

TAULBEES LN

PPRRIVIVAATTEE RRDD

PRIVATE RD PRIVATE RD

PPAALLMMRRDD

HHEELLMMSSDDAALLEE RRDD

LOS VALLECITOS BL

JOHNSTON LN
SSII

LLVVEERR SSPP UURR WWYY

LLOOSS OOLLIVIVOOSS DDRR

ABERDEEN AV ABERDEEN AV

CCHHAARRLLOOTTTTEE DDRR

BOUQUET DR BOUQUET DR

CCUURRRRYY

CCOOMMBB
DDRR

SUNSHINE LN SUNSHINE LN

CCOOMMEETTCCRR COMET CR COMET CR

WESTLAKE DR

WESTLAKE DR

CHINABERRY LN CHINABERRY LN

CCAALLLLEEEEMMPPAARRRRAADDOO
SS
BBEENN
TT
AAVV

LLIINNDDAA VVII

SSTTAA DDRR

DDUUNNDDEEEE LLNN

ARMORLITE DR

WWIINNDDYY PPOOIINNTT DDRR
SS

SSAANNTTAA
FFEE
AAVV

CCAAMMTTOO AAMMAARRIILLLLOO

PP LL UUMM EERRIIAA DDRR

AAVVNNDDAA

VVEERRDDEE

TOYON TR TOYON TR

EE BBEELL EESSPPRRITIT CCRR

PRIVATE RD

TIGER WY

VVAALLLLEECCITITOOSS
DDEE
OORROO

AAVVNNDDAA

BBLLAANNCCOO

DESCANSO AV

LLOOMMAA

AALLTTAA DDRR

SAN MARCOS SAN MARCOS
A3_1
A3_1
A3_1
A3_1
A3_1 A3_1
A3_1
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A3_1
April, 2019
Map Legend
(Sheet 8 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 840 1,680
Scale in Feet [
North

OLEANDER AV

DESCANSO AV

AALLTTUURRAADDRR

S RANCHO SANTA FE RD S RANCHO SANTA FE RD

S LAS POSAS RD S LAS POSAS RD
VVIAIA

VVEERRAA

CCRRUUZZ

KENSINGTON DR KENSINGTON DR

RRIICCHHMMAARR
AAVV

W MISSION RD
VVAIIA

LLAA VVEENNTTAA

W SAN MARCOS BL

HHYYDDRRAA CCTT

NN LLAASSPPOOSSAASS RRDD

NN RRAANNCCHHOO SSAANNTTAA FFEE RRDD

NN TTWWIINNOOAAKKSSVVAALLLLEEYY RRDD

SSPPRRUUCCEE
DDRR

KKNNOOLLLL
RRDD

VIA PORTOLA VIA PORTOLA
SS
SS

AANNTTAA FFEE AAVV

QQUU AAIILL HHIILLLL DDRR

PPRRIIVVAATTEERRDD

PPAALLOOMMAARRCCOOSSAAVV

TTEESSOORROO AAVV
RR

PPIVIVAATTEE
RRDD

VVIIAA CCOONNTTEESSSSAA

MCMAHR RD

MCMAHR RD

LAS FLORES DR LAS FLORES DR

WWBBOORRDDEENN RRDD

PRIVATE RD PRIVATE RD

DISCOVERY ST

NAVAJO ST

NAVAJO ST
VVII

AA DDEE PPLLAATTAA

PPOOMMMMEELLWWYY

RRUU EE
DDEE

VVAALLLLEE

FIREBIRD LN FIREBIRD LN
01ST ST
CCII

MMAA DDRR

FFIITTZZPPAATTRRIICCKK RRDD

PP RR IIVV AATTEE RRDD

AAVVNNDDAA

AAGGUUIILLAA

WOODWARD ST

WOODWARD ST

WW BBEELL EESSPPRRIITT CCRR

GGRRAA NNDDOONN AAVV

PRIVATE RD PRIVATE RD
ALLEY

PPRRIIVVAATT
RREE
DD

AVNDA LEON AVNDA LEON

PAWNEE ST

PAWNEE ST

PPOONNTTEE AAVV
VVII

AA CCAAFFEETTAALL

S PACIFIC ST

S PACIFIC ST

CCAALLLLEE PPRROOSSPPEERROO

LAS FLORES DR LAS FLORES DR

VVAALLLLEECC TITI OOSSDDRR

CAPALINA RD

AAVVNNDDAA

AA RRAANNAA

CCAAMM DDEELL
SSOOLL

LLAA NNOOCCHHEE DDRR

BINGHAM DR BINGHAM DR

N PACIFIC ST

N PACIFIC ST

VVIIAABBAAHHII
AA

LLEEGGAACCYY DDRR

AA PP PPLLEE WWIILL DDEE DD RR

MARCOS ST MARCOS ST

WWII NN DDYY
WWYY

GRAND AV

HHOOLLLLEENNCCRREESSTT RRDD

VVIIAA CCAALLIIEENNTTEE

CTE LIRA

KKIIRRKKWWAALLLL DDRR

AAVVNNDDAA CCOORRDDOOBBAA

AAVVNN DDAA

AA MMIISSTTAADD

AAVVNNDDAAAABBEEJJAA
LLAA

MM IIRRAADDAA
DD
RR

CCAALLLLEECCAAPPISISTTRRAANNOO

CCTTEE MMAANNOOLLIITTOO

GGLLEE NN DD AA LLEE
AAVV

N ECHO LN N ECHO LN

ROMA AV
CCTTEE

LLOORREENN

AVNDA AMIGO AVNDA AMIGO

BOARDWALK

CCAAMM MMAAGGNNIIFFIICCOO

BBEELL EESS PPRRIITT CCRR

LLIINNDDAA VVIISSTTAA
DDRR
ALLEY

CCAASSIITTAA LLNN
PPRRII

VVAATTEE RRDD

AUTUMN DR

AAVVNNDDAA

AAZZUULL

LLIIBBEERRTTYY DDRR

PPEEAACCHHWWYY

N PACIFIC ST N PACIFIC ST

HHOO NNEEYYSSUUCCKKLLEE DDRR

HHOOLLZZAAPPPPLLEE LLNN

LLAA SSOOMMBBRRAA DDRR

OOAAKKTTRREEEE LLNN

AARRBBOORRVVIIEEWW DDRR

RROOBBIINNHHOOOODDLLNN
ALLEY

SEMINOLE ST

CREEK ST
LLAA

MMIIRRAADDAA
DD
RR

CHEROKEE ST
ALLEY
ALLEY
LLIINN
DDAA

VVIISSTTAA
DD
RR

B ST B ST
09TH ST
ALLEY
LAW ST

POINSETTIA AV POINSETTIA AV

TTAAUULLBB
EE
EE
SSLLNN

PPAALLMMRRDD
JJOOYY
CCTT

TTIIGGEERRWWYY

HHEELLMMSSDDAALLEERRDD

LOS VALLECITOS BL
01ST ST
LLAA

CCOOLLUUSSAA
DD
RR

STONE DR

COMET CR COMET CR

DESCANSO DESCANSO

PPRRIIVVAATTEERRDD

COMET CR

BBOORRDDEENN RRDD

CURRY COMB DR CURRY COMB DR

SS BBEENNTT AAVV

TAMARISK LN TAMARISK LN

PRIVATE RD PRIVATE RD

WESTLAKE DR WESTLAKE DR

NN AALLDDAADDRR

LLIINNDDAA VVII

SSTTAA DDRR

PPRRIVIVAATTEE RRDD

SSEECCUURRIITTYY PPLL
DD
UU
NN
DD

EEEE LLNN

ARMORLITE DR

GRENACHE LN GRENACHE LN

BBEEVVEERRLLYY PPLL

CREEKSIDE DR

CCAAMMTTOO
AA
MM

AARRIILLLLOO

AAVVNNDDAA VVEERRDDEE

TTOOYYOONN TTRR

CCTTEE BBAAGGAALLSSOO

EE BBEELL EESSPPRRIITT CCRR

AAVVNNDDAA RREEGGIINNAA

TILLEY LN TILLEY LN

PRIVATE RD PRIVATE RD

VIRGINIA PL

VIRGINIA PL

VVAALLLLEECCIITTOOSSDDEEOORROO

PPRRIVIVAATTEERRDD

AAVVNNDDAA BBLLAANNCCOO

AAVVNNDDAA PPAANN TT

EE RRAA

DESCANSO AV

AAVVNNDDAA FF RRAA

GGAATT AA

GGOOLLFFGGLLEENNDDRR

LLOOMMAA AALLTTAA
DDRR

PPRRIIVVAATTEERRDD

AAVVNNDDAA CCOODDOORRNNIIZZ

DD EE LLEEOONNEE RRDD

PPRRIIVVAATTEE RRDD

PPRR VIVI AATTEE RRDD

PPRRIVIVAT
ATEE
RDRD

PRIVATE RD

PPRRIIVVAATTEE
RRDD

PRIVATE RD PRIVATE RD

PP RRIIVVAATTEE RRDD

PRIVATE RD PRIVATE RD

PRIVATE RD PRIVATE RD
Agua Hedionda Creek
San Marcos Creek

SAN MARCOS SAN MARCOS

VISTA VISTA
S.D. COUNTY S.D. COUNTY
A3_2
A3_2
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A3_2
April, 2019
Map Legend
(Sheet 9 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,300 2,600
Scale in Feet
North
[

RRUUSSHHDDRR

LLAA SSOO

MMBBRRAA DDRR

LLAA NNOOCCHHEE DDRR
JJUUGG
AADDOO
RR
CC TT

VVIILLLLAAGGEE DDRR

FESTIVAL RD FESTIVAL RD

BBLLUUEE JJAAYY LLNN

RUBY CT RUBY CT

VVAANNEESS

SSAA WWYY

ECHO LN ECHO LN

LLAA GGRRAANNAADDAA DDRR

AALLMMOONNDD
RRDD

VVEEGGAA WWYY

BBUUCCKKHHOORRNN AAVV

QQUUAAII

LL HHIILLLL DDRR

TRILOGY ST TRILOGY ST

MMAARRQQUUEETTTTEEAAVV

AURORA AV AURORA AV

EELLOORRAA LLNN

ORCHID AV ORCHID AV

WWILILDD

CCAANNYYOONN DDRR

TTUUCCAANNAA DDRR

SSAANNEELLIIJJOO RRDD

LLAARRKKSSPPUURRCCTT

LLEEDDGGEESSTT

PPOOPPPPYY RRDD

MCMAHR RD MCMAHR RD

MM EE NNDDOOCCIINNOO DDRR

DDUUNNCCAANN CCTT

VVIIOOLLEETT AAVV

CCIIMMAA DDRR

HHOONNEEYYSSUUCCKKLLEEDDRR

VVAALLEENNCCIIAA AAVV

LLAA PPLLAAZZAA DDRR
SS

TTWWIINN
OOAA

KKSS VVAALLLLEEYY RRDD

CCAAMM CCAARRTTAA

VVIIAA VVEERRAA CCRRUUZZ

AAPPPPLLEEWWIILL DDEE
DDRR

SSTTOONNEERRIDIDGGEE WWYY

IIRROONN HHOORRSSEE DDRR

LLEENNAA CCTT

BBAAJJAAWWYY

HHAALILI EEYY CCTT

AATTTTEEBBUURRYY
RRDD
OO

RRIOIOLLEE WWYY

QUORUM CT QUORUM CT

PPRRIIVVAATTEE DDYY

SSAANN PPAABBLLOO DDRR

TTRRAAIILLSSIIDDEEPPLL

PPEEAARRLLEEAAFF CCTT

WWILILDDLLIILLAACC CCRR

CCAANNYYOONN HHEEIIGGHHTTSS

DDOOUUBBLLEEPPEEAAKK DDRR

BBRRIIDDGGEEPPOORRTT CCTT
PPEEAA

RRLL DDRR

PPRRIIVVAATTEE RRDD

QQUUAARRTTZZ CCTT

LLAA RREEIINNAA DDRR

SSKKYYLLNINI EEPPLL

KKEE LL LLOOGGGG
SSTT

BBEELLLLAAVVIITTAA WWYY

CCOOSSTTAA DDEELL SSUURR

BBEELLLLAA

VVIITTAA
WW YY

VVIISSTTAA CCOOLLIINNAA DDRR

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEERRDD
S.D. COUNTY S.D. COUNTY

SAN MARCOS SAN MARCOS
A4_1
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A4_1
April, 2019
Map Legend
(Sheet 10 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 840 1,680
Scale in Feet [
North

VVII AA

VVEERRAA CCRRUUZZ

VILLAGE DR VILLAGE DR

SSUUMMMMEERRHHOOLLLLYY DDRR

AA PPPPLLEEWWIILLDDEE DDRR

ECHO LN ECHO LN

SSAANNTTAA BBAARRBBAARRAA DDRR

PRIVATE RD PRIVATE RD

WWHHIITTEESSAAGGEE RRDD

DISCOVERY ST DISCOVERY ST

PLATEAU AV PLATEAU AV

CCRREEEEKKNNEETTTTLLEE RRDD

PRIVATE RD

DISCOVERY ST DISCOVERY ST

BBUUCCKKHHOORRNN AAVV

TIBURON ST TIBURON ST

RUSH DR RUSH DR

PRIVATE RD PRIVATE RD

PPRRAAIIRRIIEE RROOSSEE WWYY

PPRRIIVV AA TTEE RRDD

PRIVATE RD PRIVATE RD

MMAARRQQUUEETTTTEEAAVV

FFOOXXHHAALLLL CCTT

PPOOPPPPYY RRDD

SSHHEENN AANNDDOOAAHH AAVV

ORCHID AV ORCHID AV

AAVVNNDDAA LLAA CCUUEESSTTAA

LARKSPUR CT LARKSPUR CT

MMEENNDD OOCCIINNOODDRR

VVIIOOLLEETTAAVV

GRAND AV

CRAVEN DR CRAVEN DR

FFOOXXHHAALLLL
DDRR

HHOONNEEYYSSUUCCKKLLEE DDRR
PPRRI

IVVAATTEE DDYY

KKEELLLLOO GG

GG SSTT

CCAAMM CCAARRTTAA

PPRRIIVVAATTEE DDYY

WINDRIDGE CR

OOVVEERRLLOOOO KK CCRR

PRIVATE RD

CRAVEN RD

BBOOLLOOTTIINNLLNN

IIRROONN HHOORRSSEE DDRR

PRIVATE DY PRIVATE DY

PPRRIIVVAATTEE RRDD

S TWIN OAKS VALLEY RD S TWIN OAKS VALLEY RD

AAVVNNDDAAOORRTTEEGGAA

QUORUM CT QUORUM CT
SS
BBEENN
TT
AAVV

PRIVATE RD
HH

AAPPPPYY HHIILLLL LLNN

TTRRAAIILLSSIIDDEE PPLL
JOY CT

PPRR IIVVAATTEE RR
DD

WWILILDD LLIILLAACCCCRR

ECHO LN

LOCUST ST LOCUST ST

SSOONNOOMMAA SSTT

LLUUPPII NNEE
DDRR

PRIVATE RD PRIVATE RD
San Marcos Creek

SAN MARCOS SAN MARCOS
A4_2
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A4_2
April, 2019
Map Legend
(Sheet 11 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 525 1,050
Scale in Feet [
North

CCOORROONNAADDOOHHILILLLSS DDRR

SSIILLVVEERR SSHHAADDOOWWDDRR

LLAA MMOORREEEE RRDD

EEDDGGEEWWAATTEERRDDRR

BBLLOOOOMMFFIIEELLDDAAVV
EECC
HH

OO LLNN

SSAANNTTAA BBAARRBBAARRAA DDRR

VVIILLLLAAGGEEDDRR

S TWIN OAKS VALLEY RD S TWIN OAKS VALLEY RD

CAMPUS WY

PPRRIIVVAATTEE
RRDD

PPRRIIVVAATTEE RRDD

BBAALLLLOOWW
WYY

BARHAM LN BARHAM LN

CCOOCCOOSS DDRR

WWHHIITTEESSAAGGEE RRDD

DISCOVERY ST DISCOVERY ST

WWAASSHHININGGTTOONNIIAADDRR

AALLMMOONNDD
RRDD

TTRRIILLOOGGYY SSTT

BBUUCCKKHHOORRNN AAVV

RUSH DR RUSH DR

REDEL RD
VVIIAA

DD EELL CC AA BBAALLLLOO

MMAARRQQUUEETTTTEEAAVV

GRAND AV

SSTTOONNEERRIDIDGGEE WWYY

VVIIAA DDEE LL CC AAMMPPOO

BBEELLLL DDRR

EELLOORRAA LLNN

CUSTER AV

CUSTER AV

ORCHID AV ORCHID AV

AAVVNNDDAA

LLAA CCUUEESSTTAA

MM EE NNDDOOCCIINNOO DDRR

VVIIOOLLEETTAAVV

CCAA MM HH
EERRMM

OO SSOO

CCAAMM VVEERRDDEE

FFOOXXHHAALLLL DDRR

CCRRAAVVEENNDDRR

STREET E

CCAAMM CCAARRTTAA

DISCOVERY ST DISCOVERY ST

BARHAM DR BARHAM DR

NORTH CITY DR NORTH CITY DR

CRAVEN RD CRAVEN RD

IIRROONN HHOORRSSEE DDRR

AURORA AV AURORA AV

TRADE ST

PRIVATE DY PRIVATE DY

SSAANNDDYYLLNN

S CARMEL RD

EECCHH OO LLNN

OLVIDA DR

QUORUM CT QUORUM CT

PPRRIIVVAATTEE DDYY

CCOONNDDOORRLLNN
HH

AAPPPPYY

HHIILLLL LLNN

PPRRIIVVAATTEE RRDD

PRIVATE RD PRIVATE RD

CCAAMMPPUUSSVVIIEEWWDDRR

MID CITY LN MID CITY LN

CCAAMMTTOO AA CCAASSAA

PPEEAARRLLEEAAFF CCTT

WWLILI DDLLII

LLAACC CCRR

VVIINNTTAAGG EE

TTPP DDRR

PRIVATE RD PRIVATE RD

LOCUST ST LOCUST ST

TERRIER WY TERRIER WY

SHUBIN LN SHUBIN LN
SS
OONNOO
MM
AA
SSTT

KKEE LLLL OOGGGG
SSTT

CYCAD DR CYCAD DR

PPRRIIVVAATTEE RRDD

DENISE CT DENISE CT

WWAALLNNUUTT HHIILLLLSS DD
RR

PPHHOOEENNIXIXWWYY

SUPREME CT SUPREME CT

PPRRIIVVAATTEE RRDD
BB

EELL LL AA

VVII TTAA WWYY

CCAAMMPPUUSSVVII

EEWW DDRR
San Marcos Creek

SAN MARCOS SAN MARCOS
A4_3
A4_3
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A4_3
April, 2019
Map Legend
(Sheet 12 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 840 1,680
Scale in Feet [
North

CCOORROONNAADDOO HHILILLLSSDDRR

DISCOVERY ST DISCOVERY ST

WWOOOODDLLAANNDD
PPYY

SSUUMMMMEERRHHOOLLLLYY DDRR

LLAA MMOORREEEE RRDD

WWAALLNNUU
HTHT

LLII LLSS DDRR

WWHHIISSPPEERRNINI GG

WWAATTEERR
DDRR

BBLLOOOOMMFFIIEELLDDAAVV

ECHO LN ECHO LN

SSAANNTTAA BBAARRBBAARRAA DDRR

VVIILLLLAAGGEEDDRR

RRAANNCCHHEERROOSS DDRR

NN TTWWIINN OO

AAKKSS VVAALLLLEEYY RRDD

W SAN MARCOS BL W SAN MARCOS BL

SS HH EELLLLYY
DD
RR

BBAARRHHAAMM LLNN

CCOOCCOOSSDDRR

WWHHIITTEESSAAGGEE RRDD

DISCOVERY ST DISCOVERY ST

WWAASSHHININGGTTOONNIIAADDRR

ALMOND RD ALMOND RD

PICO AV

TRILOGY ST TRILOGY ST

RUSH DR RUSH DR

REDEL RD
VVIIAA

DDEELL CC AABBAALLLLOO

ENTERPRISE ST ENTERPRISE ST
PPRRII

VVAATTEERRDD

MMAARRQQUUEETTTTEEAAVV

S TWIN OAKS VALLEY RD S TWIN OAKS VALLEY RD

VVIIAA DD EE LL CC AAMMPPOO

PPOOPPPPYYRRDD

CAMPUS WY

SSHHEENN AANNDDOOAAHH AAVV

PRIVATE RD PRIVATE RD

AAVVNNDDAA LLAA CCUUEESSTTAA

AADDEE LLEE LLNN
VVEENN
TT
UU

RREE SS
TT
MM

EE NNDDOOCCIINNOO DDRR

KNOLL RD

VVIIOOLLEETTAAVV

EEDDGGEEWWAATTEERR
DD
RR

EE SSAANN MMAARRCCOOSS BBLL
CCAAMM

HH EE RRMMOO SS OO

CCAAMMVVEE RRDDEE

N ECHO LN

FFOOXXHHAALLLL DDRR

CCRRAAVVEENNDDRR

FFLLOOWWEERR HHILILLL WWYY

STREET E

CAM CARTA CAM CARTA

WWIINNDDRRIIDDGGEE CCRR

E CARMEL ST E CARMEL ST

LOS VALLECITOS BL LOS VALLECITOS BL

BBAARRHHAAMM DDRR

NORTH CITY DR NORTH CITY DR

CRAVEN RD

GRAND AV

SSTTOONNEERRIDIDGGEE WWYY

IIRROONN HHOORRSSEE DDRR

AURORA AV AURORA AV

HILL DR

PRIVATE DY PRIVATE DY

SSIILLVV EE RR SSHHAADDOOWW DD
RR
SS
BBEENN
TT
AAVV

SSAANNDDYYLLNN
MM
AATTAA
WWYY

ECHO LN

OLVIDA DR

INDUSTRIAL ST

VV IIAA VVEERRAA CCRRUUZZ

PRIVATE RD

CCOONNDDOORRLLNN
HH

AA PPPPYY

HHIILLLL LL
JJ
NN
OOYY
CCTT

PRIVATE RD PRIVATE RD

DD AAYY LL IILLYY CCTT

CCAAMMPPUUSSVVIIEEWWDDRR SSAANNTTAARRPPLL

MID CITY LN MID CITY LN

CCAAMMTTOO AA CCAASSAA

PPEEAARRLLEEAA FFCCTT

WESTLAKE DR

VVININTTAAGGEE
TT

PP DDRR

PRIVATE RD PRIVATE RD

PPRRIIVVAATTEE RRDD

TRADE ST
BB
AALLDD
WW

NINI LLNN

BBRRIIDDGGEEPPOORRTT
CCTT

LOCUST ST LOCUST ST

TERRACE LN

SSKKYYLLNIINEE
PPLL

TERRIER WY TERRIER WY

JOHNSTON LN

SHUBIN LN SHUBIN LN

VALPREDA RD

SSOONNOOMMAA SSTT

JJAASSOONNLLNN

KK EELLLL OO GGGG
SSTT

CREEKSIDE DR CREEKSIDE DR

SSAADDDDLLEEBBAACCKK WYY

CCYYCCAADD DDRR

PPRRIIVVAATTEE RRDD
VVIIAA
DDEELL

PPRRAADDOO

CCAAMM DDEE LLAA CC IIMMAA

DENISE CT DENISE CT

PPHHOOEENNIXIXWWYY

SUPREME CT SUPREME CT

PPRRIIVVAATTEERRDD

PPRRIIVVAATTEE RRDD

BBEELLLLAA

VVIITTAA
WWYY

PP RR IIVVAATTEE RRDD

CCAAMMPPUUSS
VVII

EEWW DDRR
San Marcos Creek

SAN MARCOS SAN MARCOS
S.D. S.D.

COUNTY COUNTY
A4_4
W:\17729_SanMarcosDMP\GIS\DeliverableMaps\SMDMP_G_RegionalImpOpp_11x17.mxd City of San Marcos - Drainage Master Plan

APPENDIX G
Regional Improvement Opportunities - A4_4
April, 2019
Map Legend
(Sheet 13 of 13)
Regional Improvement
Oppurtunities
Contributing Area Regional
BMPs
Existing Inventory
#* Channel Confluence
"/ Cleanout
$1 Curb Inlet
$1 Curb Outlet
!( Detention Basin
"/ Inlet
"/ Outlet
$+ Other
2! Separator
l? Outfalls
$ Culvert
$ Channel wider than 5 ft
$ Ditch less than 5 ft wide
$ Elliptical
$ Natural Channel
$ Storm Main
Flow Path
Storm Detention Basin
Source: City of San Marcos, Rick Engineering Company,
SANGIS/USGS Aerial Imagery: 11/2014
0 1,000 2,000
Scale in Feet [
North
Appendix H
City of San Marcos Drainage Master Plan (DMP) – Model Selection Memo TO: Mr. Lewis Clapp
FROM: Brendan Hastie
DATE: June 7, 2016
SUBJECT: CITY OF SAN MARCOS DRAINAGE MASTER PLAN (DMP) – MODEL

SELECTION MEMO
(RICK ENGINEERING JOB NUMBER 17729)
The City of San Marcos (City) has requested that a Drainage Master Plan (DMP) be prepared in order to aid with the flood control needs of the City.

To comply with flood control needs, a deep understanding of the watershed hydrology, hydraulics, and existing infrastructure performance is required. These runoff characteristics are best evaluated using a watershed-scale approach that implements Hydrologic and Hydraulic (H&H) models to identify critical locations of each watershed. The flood control recommendations extracted from the models can be used to ensure that the City is strategically implementing projects with the greatest benefit for the lowest costs.

There are several programs available to model watershed hydrology and hydraulic systems. Therefore, the purpose of this model selection memo is to address required model selection criteria to propose the modeling tools that best fit with the City’s goal of strategic project implementation.

The watershed models must be capable of meeting the drainage master plan goals and objectives through the representation of a major model component: watershed hydrology and hydraulics. The hydrology/hydraulics model component serves as the backbone to the watershed representation and should have the ability to provide reliable results that are reflective of existing conditions. Accurate storm water flow rates and volumes lead to reliable infrastructure performance for the existing condition. The selected model will have the capability to provide a variety of runoff properties, including flow rates, volumes and time of concentrations.

Mr. Clapp
June 7 2016